cancan gem
ability.rb can can default file
ability.rb: admin can manage all; non-admin can manage classes where user_id == user.id
application controller rescues from cancan unauthorized error by redirecting to root_url with alert message of 'You are not authorized'
rails_admin initializer uses cancan
rescue from cancan access denied -- specifies '/' instead of root_url
ability - admin can access rails_admin and dashboard; non-admin can manage accounts where user_id is user.id
user model - rails_admin initial setup
remove comments from rails_admin initializer
rails_admin basic setup for account
accounts field on accounts # edit in rails_admin is read_only
seeded Admin user has name of Admin User