Merge pull request #4 from decatan/master

Shifted pages to dynamic_pages controller
Merge pull request #5 from decatan/master

added working follow/unfollow
Merge pull request #6 from decatan/master

added working comment model
Merge pull request #7 from decatan/master

working activity feed
Merge pull request #8 from decatan/master

changed a lot of stuff
dependent destroy for comments