Refactor: Inbox store, remove inboxes from sidebar (#387)

* Refactor: Inbox store, remove inboxes from sidebar

* Add a new page for inbox settings

* Show inboxes on sidebar

* Add inbox_members API

* Disable similar-code check

* Fix codeclimate scss issues

* Add widget_color update API and actions

* Add specs for inbox store

* Fix Facebook auth flow

* Fix agent loading, inbox name

app/javascript/dashboard/api/channel/fbChannel.js

@@ -19,6 +19,13 @@ class FBChannel extends ApiClient {
       contact_id: contactId,
     });
   }
+
+  create(params) {
+    return axios.post(
+      `${this.apiVersion}/callbacks/register_facebook_page`,
+      params
+    );
+  }
 }
 
 export default new FBChannel();