Revamp of the Settings State System along with TypeScript support (#1560)

* Add vue-rx, rxjs and lodash as dependencies

* Added vue-rx plugin integration to nuxt config

* Initial settings store implementation

* Add babel plugin for private class properties to for Jest

* Add DispatchingStore test spec

* Initial settings code

* Reactive Streams for fb current user and id token

* Fix typo

* Migrate index and graphql pages to the new store

* Migrate network strategy to the new store

* Fixed Section.vue errors

* Fix getSettingSubject issue

* Migrate fb settings reference in components to the new state system

* Add typings for lodash as dev dependency

* Load setting

* Load initial sync setting values

* Update proxy url

* Add typescript support

* Rewrite Settings store to TypeScript

* Port Settings page to TypeScript as reference

* Move all store migrations to a separate file

* Delete test file for fb.js

* Add ts-jest as dev dependency

* Remove firebase-mock as dependency

* Remove FRAME_COLORS_ENABLED settings value

babel.config.js

@@ -5,6 +5,9 @@ function isBabelLoader(caller) {
 module.exports = function (api) {
   if (api.env("test") && !api.caller(isBabelLoader)) {
     return {
+      plugins: [
+        "@babel/plugin-proposal-class-properties"
+      ],
       presets: [
         [
           "@babel/preset-env",