Revert "rework"

This reverts commit 38c25e9f327a9277409bc00d9c89329e2ef5bd3e.
Replaced pagination plugin to support category.
Enable pagination and set root to articles.
Use pagination for articles index.
Fixed slug. This should be based on title but with limited char set.

Checkout more: http://fr.wikipedia.org/wiki/Slug_(journalisme)
Fix pagination, thx to BIGBROZERRRRR