Cleans up authentication and registration
Makes authentication check global
Merge pull request #15 from isfit/devise-cleanup

Devise cleanup
Removes depreciated application module
Removes depreciated functionary module
Removes dead code
Removes old participant module
Removes dead dialogue participant model file
Removes old control panel
Restored main scss file
Merge branch 'legacy-cleanup' of github.com:isfit/isfit-participant into legacy-cleanup