Refactors most controllers and directives into classes for more organized and maintainable code

app/assets/javascripts/services/httpManager.js

@@ -0,0 +1,13 @@
+import { SFHttpManager } from 'snjs';
+
+export class HttpManager extends SFHttpManager {
+  /* @ngInject */
+  constructor(storageManager, $timeout) {
+    // calling callbacks in a $timeout allows UI to update
+    super($timeout);
+
+    this.setJWTRequestHandler(async () => {
+      return storageManager.getItem('jwt');
+    });
+  }
+}