diff --git a/package-lock.json b/package-lock.json
index ec4a2bc..7abd6c0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,6 @@
       "version": "0.1.0",
       "license": "LGPL-3.0",
       "dependencies": {
-        "async-lock": "^1.3.1",
         "backbone": "^1.4.0",
         "coffeeify": "^3.0.1",
         "coffeescript": "^2.3.2",
@@ -23,11 +22,10 @@
         "derby": "^0.10.10",
         "dir-tree": "^1.0.1",
         "directory-tree": "^2.2.1",
-        "express": "^4.16.4",
+        "express": "^4.17.3",
         "express-session": "^1.16.1",
         "file-saver": "^2.0.0",
         "font-awesome": "^4.7.0",
-        "global-cache": "^1.2.1",
         "jquery": "^3.4.0",
         "jquery-resizable-dom": "^0.32.0",
         "jstree": "^3.3.8",
@@ -50,11 +48,14 @@
         "tippy.js": "^3.4.1",
         "uid-safe": "^2.1.5",
         "underscore": "^1.9.1",
+        "util-promisifyall": "^1.0.6",
         "uws": "^10.148.1",
         "w3-css": "^4.1.0"
       },
       "devDependencies": {
+        "connect-timeout": "^1.9.0",
         "findit": "^2.0.0",
+        "line-reader-sync": "^0.1.0",
         "node-fetch": "^2.6.7",
         "qunitjs": "^2.4.1",
         "uuid": "^8.3.2"
@@ -95,11 +96,12 @@
       "license": "MIT"
     },
     "node_modules/accepts": {
-      "version": "1.3.7",
-      "license": "MIT",
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
       "dependencies": {
-        "mime-types": "~2.1.24",
-        "negotiator": "0.6.2"
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
       },
       "engines": {
         "node": ">= 0.6"
@@ -306,11 +308,6 @@
       "version": "1.0.3",
       "license": "MIT"
     },
-    "node_modules/async-lock": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.3.1.tgz",
-      "integrity": "sha512-zK7xap9UnttfbE23JmcrNIyueAn6jWshihJqA33U/hEnKprF/lVGBDsBv/bqLm2YMMl1DnpHhUY044eA0t1TUw=="
-    },
     "node_modules/asynckit": {
       "version": "0.4.0",
       "license": "MIT"
@@ -430,6 +427,15 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "node_modules/bigbuffer": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/bigbuffer/-/bigbuffer-0.0.5.tgz",
+      "integrity": "sha512-SZmBAsOzrr2NAb0AokfVQbSktjXXjY7ckvIdm0Yym3y2XJFjB6nr3btbIfq7wyAYQn/uHq316I1q2rApNTPISA==",
+      "dev": true,
+      "dependencies": {
+        "should": "*"
+      }
+    },
     "node_modules/binary-extensions": {
       "version": "2.2.0",
       "license": "MIT",
@@ -462,36 +468,57 @@
       "license": "MIT"
     },
     "node_modules/body-parser": {
-      "version": "1.19.0",
-      "license": "MIT",
+      "version": "1.19.2",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.2.tgz",
+      "integrity": "sha512-SAAwOxgoCKMGs9uUAUFHygfLAyaniaoun6I8mFY9pRAJL9+Kec34aU+oIjDhTycub1jozEfEwx1W1IuOYxVSFw==",
       "dependencies": {
-        "bytes": "3.1.0",
+        "bytes": "3.1.2",
         "content-type": "~1.0.4",
         "debug": "2.6.9",
         "depd": "~1.1.2",
-        "http-errors": "1.7.2",
+        "http-errors": "1.8.1",
         "iconv-lite": "0.4.24",
         "on-finished": "~2.3.0",
-        "qs": "6.7.0",
-        "raw-body": "2.4.0",
-        "type-is": "~1.6.17"
+        "qs": "6.9.7",
+        "raw-body": "2.4.3",
+        "type-is": "~1.6.18"
       },
       "engines": {
         "node": ">= 0.8"
       }
     },
     "node_modules/body-parser/node_modules/bytes": {
-      "version": "3.1.0",
-      "license": "MIT",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
+      "integrity": "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg==",
       "engines": {
         "node": ">= 0.8"
       }
     },
+    "node_modules/body-parser/node_modules/http-errors": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.8.1.tgz",
+      "integrity": "sha512-Kpk9Sm7NmI+RHhnj6OIWDI1d6fIoFAtFt9RLaTMRlg/8w49juAStsrBgp0Dp4OdxdVbRIeKhtCUvoi/RuAhO4g==",
+      "dependencies": {
+        "depd": "~1.1.2",
+        "inherits": "2.0.4",
+        "setprototypeof": "1.2.0",
+        "statuses": ">= 1.5.0 < 2",
+        "toidentifier": "1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/body-parser/node_modules/qs": {
-      "version": "6.7.0",
-      "license": "BSD-3-Clause",
+      "version": "6.9.7",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.9.7.tgz",
+      "integrity": "sha512-IhMFgUmuNpyRfxA90umL7ByLlgRXu6tIfKPpF5TmcfRLlLCckfP/g3IQmju6jjpu+Hh8rA+2p6A27ZSPOOHdKw==",
       "engines": {
         "node": ">=0.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
       }
     },
     "node_modules/brace-expansion": {
@@ -893,6 +920,20 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/coffee-script": {
+      "version": "1.12.7",
+      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.12.7.tgz",
+      "integrity": "sha512-fLeEhqwymYat/MpTPUjSKHVYYl0ec2mOyALEMLmzr5i1isuG+6jfI2j2d5oBO3VIzgUXgBVIcOT9uH1TFxBckw==",
+      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
+      "dev": true,
+      "bin": {
+        "cake": "bin/cake",
+        "coffee": "bin/coffee"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
     "node_modules/coffeeify": {
       "version": "3.0.1",
       "license": "MIT",
@@ -1070,6 +1111,21 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "node_modules/connect-timeout": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/connect-timeout/-/connect-timeout-1.9.0.tgz",
+      "integrity": "sha512-q4bsBIPd+eSGtnh/u6EBOKfuG+4YvwsN0idlOsg6KAw71Qpi0DCf2eCc/Va63QU9qdOeYC8katxoC+rHMNygZg==",
+      "dev": true,
+      "dependencies": {
+        "http-errors": "~1.6.1",
+        "ms": "2.0.0",
+        "on-finished": "~2.3.0",
+        "on-headers": "~1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/console-browserify": {
       "version": "1.2.0"
     },
@@ -1078,18 +1134,39 @@
       "license": "MIT"
     },
     "node_modules/content-disposition": {
-      "version": "0.5.3",
-      "license": "MIT",
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
+      "integrity": "sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==",
       "dependencies": {
-        "safe-buffer": "5.1.2"
+        "safe-buffer": "5.2.1"
       },
       "engines": {
         "node": ">= 0.6"
       }
     },
+    "node_modules/content-disposition/node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
     "node_modules/content-type": {
       "version": "1.0.4",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
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       }
@@ -1102,8 +1179,9 @@
       }
     },
     "node_modules/cookie": {
-      "version": "0.4.0",
-      "license": "MIT",
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+      "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA==",
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       }
@@ -1371,7 +1449,8 @@
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     "node_modules/depd": {
       "version": "1.1.2",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha512-7emPTl6Dpo6JRXOXjLRxck+FlLRX5847cLKEn00PLAgc3g2hTZZgr+e4c2v6QpSmLeFP3n5yUo7ft6avBK/5jQ==",
       "engines": {
         "node": ">= 0.6"
       }
@@ -1438,7 +1517,8 @@
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     "node_modules/destroy": {
       "version": "1.0.4",
-      "license": "MIT"
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
+      "integrity": "sha512-3NdhDuEXnfun/z7x9GOElY49LoqVHoGScmOKwmxhsS8N5Y+Z8KyPPDnaSzqWgYt/ji4mqwfTS34Htrk0zPIXVg=="
     },
     "node_modules/detect-file": {
       "version": "0.1.0",
@@ -1815,15 +1895,16 @@
       }
     },
     "node_modules/express": {
-      "version": "4.17.1",
-      "license": "MIT",
+      "version": "4.17.3",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.17.3.tgz",
+      "integrity": "sha512-yuSQpz5I+Ch7gFrPCk4/c+dIBKlQUxtgwqzph132bsT6qhuzss6I8cLJQz7B3rFblzd6wtcI0ZbGltH/C4LjUg==",
       "dependencies": {
-        "accepts": "~1.3.7",
+        "accepts": "~1.3.8",
         "array-flatten": "1.1.1",
-        "body-parser": "1.19.0",
-        "content-disposition": "0.5.3",
+        "body-parser": "1.19.2",
+        "content-disposition": "0.5.4",
         "content-type": "~1.0.4",
-        "cookie": "0.4.0",
+        "cookie": "0.4.2",
         "cookie-signature": "1.0.6",
         "debug": "2.6.9",
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@@ -1837,13 +1918,13 @@
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         "parseurl": "~1.3.3",
         "path-to-regexp": "0.1.7",
-        "proxy-addr": "~2.0.5",
-        "qs": "6.7.0",
+        "proxy-addr": "~2.0.7",
+        "qs": "6.9.7",
         "range-parser": "~1.2.1",
-        "safe-buffer": "5.1.2",
-        "send": "0.17.1",
-        "serve-static": "1.14.1",
-        "setprototypeof": "1.1.1",
+        "safe-buffer": "5.2.1",
+        "send": "0.17.2",
+        "serve-static": "1.14.2",
+        "setprototypeof": "1.2.0",
         "statuses": "~1.5.0",
         "type-is": "~1.6.18",
         "utils-merge": "1.0.1",
@@ -1910,12 +1991,35 @@
       }
     },
     "node_modules/express/node_modules/qs": {
-      "version": "6.7.0",
-      "license": "BSD-3-Clause",
+      "version": "6.9.7",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.9.7.tgz",
+      "integrity": "sha512-IhMFgUmuNpyRfxA90umL7ByLlgRXu6tIfKPpF5TmcfRLlLCckfP/g3IQmju6jjpu+Hh8rA+2p6A27ZSPOOHdKw==",
       "engines": {
         "node": ">=0.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/express/node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
     "node_modules/extend": {
       "version": "2.0.2",
       "license": "MIT"
@@ -2476,18 +2580,6 @@
       "version": "0.3.0",
       "license": "BSD"
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-      "resolved": "https://registry.npmjs.org/global-cache/-/global-cache-1.2.1.tgz",
-      "integrity": "sha512-EOeUaup5DgWKlCMhA9YFqNRIlZwoxt731jCh47WBV9fQqHgXhr3Fa55hfgIUqilIcPsfdNKN7LHjrNY+Km40KA==",
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-        "is-symbol": "^1.0.1"
-      },
-      "engines": {
-        "node": ">= 0.4"
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       "version": "0.2.3",
       "dev": true,
@@ -2764,14 +2856,15 @@
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     },
     "node_modules/http-errors": {
-      "version": "1.7.2",
-      "license": "MIT",
+      "version": "1.6.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
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+      "dev": true,
       "dependencies": {
         "depd": "~1.1.2",
         "inherits": "2.0.3",
-        "setprototypeof": "1.1.1",
-        "statuses": ">= 1.5.0 < 2",
-        "toidentifier": "1.0.0"
+        "setprototypeof": "1.1.0",
+        "statuses": ">= 1.4.0 < 2"
       },
       "engines": {
         "node": ">= 0.6"
@@ -2779,7 +2872,15 @@
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     "node_modules/http-errors/node_modules/inherits": {
       "version": "2.0.3",
-      "license": "ISC"
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha512-x00IRNXNy63jwGkJmzPigoySHbaqpNuzKbBOmzK+g2OdZpQ9w+sxCN+VSB3ja7IAge2OP2qpfxTjeNcyjmW1uw==",
+      "dev": true
+    },
+    "node_modules/http-errors/node_modules/setprototypeof": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
+      "dev": true
     },
     "node_modules/http-signature": {
       "version": "1.2.0",
@@ -2800,7 +2901,8 @@
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     "node_modules/iconv-lite": {
       "version": "0.4.24",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
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         "safer-buffer": ">= 2.1.2 < 3"
       },
@@ -3406,6 +3508,16 @@
         "node": ">=6"
       }
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+    "node_modules/line-reader-sync": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/line-reader-sync/-/line-reader-sync-0.1.0.tgz",
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+      "dev": true,
+      "dependencies": {
+        "bigbuffer": "*",
+        "coffee-script": "*"
+      }
+    },
     "node_modules/load-json-file": {
       "version": "4.0.0",
       "license": "MIT",
@@ -3502,7 +3614,8 @@
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     "node_modules/media-typer": {
       "version": "0.3.0",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
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@@ -3667,7 +3780,8 @@
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       "version": "1.6.0",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
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       "bin": {
         "mime": "cli.js"
       },
@@ -3676,17 +3790,19 @@
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     },
     "node_modules/mime-db": {
-      "version": "1.48.0",
-      "license": "MIT",
+      "version": "1.52.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
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       "engines": {
         "node": ">= 0.6"
       }
     },
     "node_modules/mime-types": {
-      "version": "2.1.31",
-      "license": "MIT",
+      "version": "2.1.35",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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-        "mime-db": "1.48.0"
+        "mime-db": "1.52.0"
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@@ -3865,8 +3981,9 @@
       }
     },
     "node_modules/negotiator": {
-      "version": "0.6.2",
-      "license": "MIT",
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
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@@ -5543,17 +5660,19 @@
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     "node_modules/range-parser": {
       "version": "1.2.1",
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@@ -9459,7 +9756,9 @@
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@@ -9579,15 +9878,21 @@
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+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
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@@ -9699,7 +10004,9 @@
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@@ -10805,19 +11112,37 @@
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+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.3.tgz",
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-        "http-errors": "1.7.2",
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@@ -11001,7 +11326,9 @@
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@@ -11010,16 +11337,30 @@
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         "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
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-        "ms": "2.1.1",
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         "on-finished": "~2.3.0",
         "range-parser": "~1.2.1",
         "statuses": "~1.5.0"
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+            "inherits": "2.0.4",
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+            "statuses": ">= 1.5.0 < 2",
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@@ -11045,12 +11386,14 @@
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         "parseurl": "~1.3.3",
-        "send": "0.17.1"
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@@ -11074,7 +11417,9 @@
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-      "version": "1.1.1"
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
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@@ -11126,6 +11471,60 @@
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+      "resolved": "https://registry.npmjs.org/should/-/should-13.2.3.tgz",
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+      "dev": true,
+      "requires": {
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+        "should-format": "^3.0.3",
+        "should-type": "^1.4.0",
+        "should-type-adaptors": "^1.0.1",
+        "should-util": "^1.0.0"
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+    "should-equal": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/should-equal/-/should-equal-2.0.0.tgz",
+      "integrity": "sha512-ZP36TMrK9euEuWQYBig9W55WPC7uo37qzAEmbjHz4gfyuXrEUgF8cUvQVO+w+d3OMfPvSRQJ22lSm8MQJ43LTA==",
+      "dev": true,
+      "requires": {
+        "should-type": "^1.4.0"
+      }
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+    "should-format": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/should-format/-/should-format-3.0.3.tgz",
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+      "dev": true,
+      "requires": {
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+        "should-type-adaptors": "^1.0.1"
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+      "resolved": "https://registry.npmjs.org/should-type/-/should-type-1.4.0.tgz",
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+      "dev": true
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+    "should-type-adaptors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/should-type-adaptors/-/should-type-adaptors-1.1.0.tgz",
+      "integrity": "sha512-JA4hdoLnN+kebEp2Vs8eBe9g7uy0zbRo+RMcU0EsNy+R+k049Ki+N5tT5Jagst2g7EAja+euFuoXFCa8vIklfA==",
+      "dev": true,
+      "requires": {
+        "should-type": "^1.3.0",
+        "should-util": "^1.0.0"
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+      "resolved": "https://registry.npmjs.org/should-util/-/should-util-1.0.1.tgz",
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+      "dev": true
+    },
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@@ -11464,7 +11863,9 @@
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+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
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@@ -11505,6 +11906,8 @@
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       "version": "1.6.18",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
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@@ -11639,6 +12042,11 @@
     "util-deprecate": {
       "version": "1.0.2"
     },
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+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/util-promisifyall/-/util-promisifyall-1.0.6.tgz",
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+    },
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     },
diff --git a/package.json b/package.json
index cbed343..d7244ac 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
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     "dir-tree": "^1.0.1",
     "directory-tree": "^2.2.1",
-    "express": "^4.16.4",
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     "express-session": "^1.16.1",
     "file-saver": "^2.0.0",
     "font-awesome": "^4.7.0",