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.
We have 
```
Mercury.wiki.namespaces[14]
```
so this could look like:

```
'%@:%@.fmt('Mercury.wiki.namespaces[14], this.get('title'));
```