APPSTATE refactoring:

- Make index.html cacheable by being stateless
- Improve compression (base64 doesn't gzip well)
- Remove base64 encoding/decoding step
- Make AppState injectable so it can be unit tested
- Ready to remove the global leakage

res/app/components/stf/socket/index.js

@@ -1,5 +1,6 @@
 module.exports = angular.module('stf/socket', [
   //TODO: Refactor version update out to its own Ctrl
+  require('stf/app-state').name,
   require('stf/common-ui/modals/version-update').name
 ])
   .factory('socket', require('./socket-service'))