changed Registrations model to User

- changed reg to user and updated all the references
- added remove check get functions
refactor authentication

- moved register to Auth controller
- added implicit user with loading user form cookies in App controller
- added implicit user to index view
- changed some stuff in User model
added remove button to user list

- aditional error flash container
- checking if a user is loged in when removing users
- displaying success or error message
wip
wip - not working new article
Updated versions and app name