Add CKEditor
Use RSVP to make a better filter for posts

Since filter of posts need resolve each post's category urlName,
and relationship is Promise can not be filterd directly, so we use
RSVP to make a Promise first and resolve it as a normal filter.
Don't watch vendor scripts
Use chinese as CKEditor's language
Refactor posts.index route
Cleanup codes
Refactor button mixins
Optimize configurations
Clean up code base
Styling the new post page
Reharsh the posts.index filter by query-params
Add breadcrumb for posts
Clean up
Redefine Store and Adapter
Add test for ApplicationView
Add GC for RichEditorView
Refctor helper for moment.js
Update all dependencies to newest version