Improve Blog App documentation.

Squashed commit of the following:

commit 9e96ecbded052f123ab8326b20e0dfb61f08a272
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:28:42 2013 -0400

    Update HTML docs

commit 9e2f8122d6812e21033494f952845e6c1ca3269c
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:28:20 2013 -0400

    Update HTML docs

commit 6054c3d15839ad2645df21d0cbf63c832a1fad0c
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:28:06 2013 -0400

    Remove unneeded things

commit fbdcd9dae7c40b538da1576e9752807a6cbc5d59
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:26:47 2013 -0400

    Fixed some markup issues

commit a4ff91547c8532bccd085db04f78498c33f56a5d
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:18:36 2013 -0400

    Add Blog App

commit 838b37bfd9a8820cdcfbf25c5416cb0c79eebdfd
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:18:16 2013 -0400

    Add Toc for Blog app

commit 482bb46610bd55f987d672d3cf3db19cf66357e3
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 14:17:57 2013 -0400

    Add blog/post

commit a358ea0aa9ce6e2e4479e884494d49ccb6647455
Author: Roger Hughes <dart020@gmail.com>
Date:   Wed Apr 3 13:35:20 2013 -0400

    Add section