Partial regions and categories

When on admin control board you can see the lists of regions...and
categories. I will need to hide categories on this page.
Create partial to display only regions on dashb...

Dashboard now shows list of regions from a seperate partial.
Admin can add new categories to a specific region
Fix category list on region show page.

Had an extra <li> element on my rendered partial. Removed it and now it
looks fine.
Fix whitespace and indentation

Also removed Category.new with admin_options_controller. It is not
needed now since we moved the create a category and set it as a partial.
Remove instance variables in partials.
Refactor the params within the admin_options
Replace category with form within the form block
Fix indentation on regions partial
Refactor categories controller for readability

Within our create action, the merge region_id was messy. We now set the
merge to a variable.
Fix merge params variable name
Fix variable name for create action in categories

Variable name is now more honest with what it contains.
Store admin_regions partial in admin views
Move regions partial to dashboard view

We only want to put partials within the application view when the
partial is rendered in more than one view.
Add 12-factor gem and remove self reference for method in post.rb