app helper finds users by id so nil is a valid return value
initial commit for user-accounts
devise configured to allow users to register
sign_in and sign_up views are styled
clean up unused tests add test Event#make_permalink
admin area loads active_admin.css
moves active_admin stylesheet to stylesheets dir

oops forgot to commit this file
only allow admin users to access /admin area
adds is_admin column to admin area editor/list
adds eents to admin area
anonymous users are redirected to root_path when not logged in
adds api v1 routes
adds api for events and users
Merge branch 'user-accounts'

Conflicts:
	app/helpers/application_helper.rb
Merge branch 'api-v1'