GPS/Touchscreen update

* Touchscreen support. This includes:
  * 7-day forecast, with four days shown at one time, using left/right swipe or tapping arrow icons to shift to the end or the beginning of the forecast week.
  * Tap on scrolling alert "ticker" at bottom of screen to see full text of current alerts.
  * Tap on forecast day to see textual summary for that day.
  * Tap on sunrise/sunset times to shift to display of moonrise/moonset times.
  * Tap on gear icon to bring up Settings dialog, with optional onscreen keyboard.
* GPS time support.
* GPS location support.
* Notifications for software updates.
* Optional onscreen administrative functions, provided through the Settings dialog. These include:
  * Reboot
  * Shutdown 
  * Quit browser
  * Initiate software update.
* User customizable background and clock face colors.  
* Assorted minor bug fixes and performance improvements.

Author: kshetline

.eslintrc.json

@@ -48,6 +48,11 @@
       2,
       {
         "ArrayExpression": "first",
+        "ignoredNodes": [
+          "IfStatement > :expression *",
+          "WhileStatement > :expression *"
+        ],
+        "ignoreComments": true,
         "ObjectExpression": "first",
         "SwitchCase": 1
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@@ -81,7 +86,8 @@
     ],
     "quotes": [
       "error",
-      "single", {
+      "single",
+      {
         "avoidEscape": true
       }
     ],

.gitignore

@@ -23,7 +23,6 @@
 # IDE - VSCode
 .vscode/*
 !.vscode/tasks.json
-!.vscode/launch.json
 !.vscode/extensions.json
 
 # misc

.sasslintrc

@@ -0,0 +1,29 @@
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+    "force-element-nesting": 0,
+    "force-pseudo-nesting": 0,
+    "hex-notation": [
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+    "no-color-keywords": 0,
+    "no-color-literals": 0,
+    "no-duplicate-properties": [
+      1,
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+    "no-important": 0,
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+}

CHANGELOG.md

@@ -0,0 +1,122 @@
+## 2.4.0
+
+* Touchscreen support. This includes:
+  * 7-day forecast, with four days shown at one time, using left/right swipe or tapping arrow icons to shift to the end or the beginning of the forecast week.
+  * Tap on scrolling alert "ticker" at bottom of screen to see full text of current alerts.
+  * Tap on forecast day to see textual summary for that day.
+  * Tap on sunrise/sunset times to shift to display of moonrise/moonset times.
+  * Tap on gear icon to bring up Settings dialog, with optional onscreen keyboard.
+* GPS time support.
+* GPS location support.
+* Notifications for software updates.
+* Optional onscreen administrative functions, provided through the Settings dialog. These include:
+  * Reboot
+  * Shutdown 
+  * Quit browser
+  * Initiate software update.
+* User customizable background and clock face colors.  
+* Assorted minor bug fixes and performance improvements.
+
+## 2.3.3
+
+* Add hourly forecast feature.
+* Use darksky weather summary for wunderground forecast if available.
+* Eliminate forecast refreshes for preference changes that don't require it.
+* Fix leap second display bug for timezones with positive UTC offset.
+
+## 2.2.2
+
+* Greatly simplified, optionally interactive, installation process.
+* Service displays correct status for sudo service --status-all.
+* Development data server now defaults to port 4201 without having to set the AWC_PORT environment variable.
+* More consistent environment variable naming.
+* Extra assistance in setting up default client settings, including IP-based guess at location, 24hr vs. AM/PM, Celsius vs. Fahrenheit.
+* Improved recovery from TAI-UTC data errors.
+* Improved formatting for AM/PM-style time.
+* Special provisions for developing on Debian Linux with LXDE desktop as a close-to-Raspberry Pi substitute.
+* Fix for Weather Underground snow forecasts.
+
+## 2.1.2
+
+* Added a new weather data service, Weather Underground, so that a Dark Sky API key is not needed. Dark Sky is still an option as well, as either a backup (by default) or as a primary weather service.
+* Equinox/solstice times are now displayed.
+* A small change in rain/snow probability graphics, dependent on test of available emoji.
+* Fixed display of indoor signal meter.
+* Update of rpi-acu-rite-temperature library helps fix possible caching of corrupted data after a wireless sensor has stopped providing data.
+* Fixed incorrect Weather Underground timestamp.
+* Fixed Safari-only bug where signal meter graphic became clipped when tinted blue.
+
+## 2.0.4
+
+* Allow project to be developed on Windows and non-Raspbian Linux (already worked on MacOS).
+* Display equinoxes and solstices.
+
+## 2.0.2
+
+* Support for remote temperature sensors.
+* Updated buggy version of rpi-acu-rite-temperature package to fixed version.
+
+## 1.2.7
+
+* Added support for displaying ΔUT1 and ΔTAI.
+
+## 1.2.6
+
+* Reduce NTP polling rate.
+* Update linting and unit tests.
+
+## 1.2.5
+
+* Major updates of supporting npm packages.
+* Applied webpack to deployment of server code.
+* Improved build process for using of temperature/humidity sensor.
+* Made use of AWC_ prefix for set-up environment variables consistent.
+
+## 1.2.2
+
+* Added NTP client, leap second handling, use of cached weather conditions/forecast for up to two hours when weather server access fails. Simplified build process for using DHT22 temperature/humidity sensor.
+
+## 1.0.10
+
+* Improve marquee. Add built-in font for astronomical symbols.
+
+## 1.0.9
+
+* Improve settings dialog appearance in Firefox and Safari.
+
+## 1.0.8
+
+* Make dialog grid layout work for IE 11.
+
+## 1.0.7
+
+* Improve logic of risen tracks.
+
+## 1.0.6
+
+* Add rise/set time indicator arcs for planets.
+* Add option to debug time at accelerated rate.
+
+## 1.0.5
+
+* Add version number to settings dialog.
+
+## 1.0.4
+
+* More assorted code clean-up.
+
+## 1.0.3
+
+* Update lint and e2e.
+
+## 1.0.2
+
+* Updated README.md.
+
+##1.0.1
+
+* Fix gear.svg image so it's compatible with IE. Add MIT license to individual files.
+
+## 1.0.0
+
+* Initial release.