Added new DBController, and DBInterface
Added methods in interface, and some implementation in Database.java.
Moved database files to controllers, renamed logic to models. Restructured
to controller and driver.
Merge branch 'arnekk' into Morten
Merged database methods, added small test in Main
Merge branch 'Morten_local' into Morten
Updated generateID()
Merge branch 'Morten_local' into Morten
Adding new user now works
Merge branch 'Morten_local' into Morten
Merge branch 'Morten' of https://github.com/karlpa/it1901
Merge branch with Morten