Remove tag-related items
Remove tags from admin
Merge branch 'remove-tags'
Clean up and refactor blog app.

Squashed commit of the following:

commit 2643478b65aca60257959334c6cafd35b261a346
Author: Roger Hughes <dart020@gmail.com>
Date:   Mon Apr 1 15:14:41 2013 -0400

    Refactor and clean

commit 553359b329bc14403701f9f3e23354c9d42302ef
Author: Roger Hughes <dart020@gmail.com>
Date:   Mon Apr 1 15:09:10 2013 -0400

    Clean up

commit bb61d17c2a94313800888f88a678b29c98ea3982
Author: Roger Hughes <dart020@gmail.com>
Date:   Mon Apr 1 15:03:31 2013 -0400

    Refactor and clean

commit 921c5989e76a2a7b6564bf76bd499e8f6000bd93
Author: Roger Hughes <dart020@gmail.com>
Date:   Mon Apr 1 14:58:30 2013 -0400

    Remove CategoryCommons