set REACT_APP_MIGRATION_COMPLETE to true (#576)

Author: makoto

package.json

@@ -57,7 +57,7 @@
     "start:test": "REACT_APP_MIGRATION_COMPLETE=True REACT_APP_STAGE=local yarn start",
     "start:test:premigration": "REACT_APP_STAGE=local yarn start",
     "start:test:ipfs": "REACT_APP_STAGE=local yarn start:ipfs",
-    "build": "REACT_APP_MIGRATION_COMPLETE=False CI=false react-scripts --max_old_space_size=4096 build",
+    "build": "REACT_APP_MIGRATION_COMPLETE=True CI=false react-scripts --max_old_space_size=4096 build",
     "build:ipfs": "REACT_APP_IPFS=True PUBLIC_URL='.' yarn build",
     "postbuild": "cp build/index.html build/200.html",
     "test": "react-scripts test --env=jsdom",