Add page resource

Commands:
* rails g resource page title body:text
* rake db:migrate
Scaffold pages

Commands:
* rails g scaffold page title body:text
Revert "Generate comments controller"

This reverts commit 7be982d74c84bf2153db63e05541d5c1749f0122.

Conflicts:
	config/routes.rb
Generate comment resource in blog namespace

Commands:
* rails g resource blog/comment --no-migration
Move posts to blog namespace