Add Error Explanation Partial, used to print errors on model instances

* This will be useful when presenting the form to create/update Admins
  and pages.
* It can be rendered with:
  `<%= render 'layouts/error_explanation', :object => @admin %>`
  (replace `@admin` with the variable for the model instance)
Add debugger
added Page controller
added admin controller
Add "All Pages" button on show, clean up edit and make pages, and modified the page controller to inherit from admin
change the root path to the admin_pages_path and the find params to page id
Merge branch 'master' into 2-create-controller-for-page-model

Conflicts:
	Gemfile.lock
	config/routes.rb
Merge pull request #16 from LockeCole117/2-create-controller-for-page-model

2 create controller for page model, closes #2