Category Pages support- prototype

- loading category pages as a normal articles
- below article- list of its member pages
- searching category member pages
- animations (load more, searching) 
Prototype- needs opinions.
In `this._super()` (which references `ArticleModel#find`) you send AJAX request and here you do the same. It's a [race condition](http://en.wikipedia.org/wiki/Race_condition#Software) and should be avoided.