* add test gems
* update validation
+ validation tests
+ factories
+ seeds
- --debug
* fix validations
* rename sign_in view
+ cancan gem
* handle CanCan exceptions
* rename file to file_link
+ def is_admin?
* update few name (new => short_new)
+ routes for :articles, :events, :file_links, :feedbacks
* update feedback migration
* schema is updated
+ empty javascripts, css-files for models
+ 4 controllers
+ empty helpers
+ all abilities