configure papertrail
Add views for versions
Versions view
Delete table
Edit views and add button in moderator cabinet
inherit from AdminController
modify seeds file
merge master
remove versions_controller_spec.rb
it works, Yeahh
configure PaperTrail for using in specs
fix versions views/add helper method
add spec for versions helper module
modify versions controller
remove unnecessary html in edit form
added tests
remove unnecessary files/fix sticky footer
Merge pull request #31 from SoftServeUniversity/models_versioning

Models versioning