Fix issues with layout due to wrong class inheritance. Add can? method to user to ask if he has permission for a given resource
Add SamplesController to create and delete data and dependent: :destroy attributes to relations where it matters. Add preliminary sample data.
Add possibility to pre-define groups. Add sample data for Heroes Square
Merge master into sample_data
Merge pull request #17 from elisapp/sample_data

Add possibility to fill with stored sample data