Move forum ember app into a subdir, preparing for admin app to exist alongside

ember/forum/app/initializers/preload-data.js

@@ -0,0 +1,20 @@
+import Ember from 'ember';
+
+export default {
+  name: 'preload-data',
+  after: 'ember-data',
+  initialize: function(container) {
+    var store = container.lookup('store:main');
+    if (!Ember.isEmpty(FLARUM_DATA)) {
+      store.pushPayload({included: FLARUM_DATA});
+    }
+    if (!Ember.isEmpty(FLARUM_SESSION)) {
+      FLARUM_SESSION.user = store.getById('user', FLARUM_SESSION.userId);
+      container.lookup('simple-auth-session:main').setProperties({
+        isAuthenticated: true,
+        authenticator: 'authenticator:flarum',
+        content: FLARUM_SESSION
+      });
+    }
+  }
+};