Add ember-simple-auth, setup login

- Allow dropdown-buttons to render a partial

ember/app/authenticators/flarum.js

@@ -0,0 +1,37 @@
+import Base from 'simple-auth/authenticators/base';
+import config from '../config/environment';
+
+export default Base.extend({
+
+  restore: function(data) {
+    var container = this.container;
+    return new Ember.RSVP.Promise(function(resolve, reject) {
+      Ember.run.next(function() {
+        container.lookup('store:main').find('user', data.userId).then(function(user) {
+          resolve( { token: data.token, userId: data.userId, user: user } );
+        });
+      });
+    });
+  },
+
+  authenticate: function(credentials) {
+    var container = this.container;
+    return new Ember.RSVP.Promise(function(resolve, reject) {
+      Ember.$.ajax({
+        url:  config.apiURL+'/auth/login',
+        type: 'POST',
+        data: { identification: credentials.identification, password: credentials.password }
+      }).then(function(response) {
+          container.lookup('store:main').find('user', response.userId).then(function(user) {
+            resolve({ token: response.token, userId: response.userId, user: user });
+          });
+      }, function(xhr, status, error) {
+          reject(xhr.responseJSON.errors);
+      });
+    });
+  },
+
+  // invalidate: function(data) {
+  //     return new Ember.RSVP.Promise();
+  // }
+});