getUserWithUsername returns a user object from the DB
Merge branch 'max5000' of https://github.com/KennethAS/Fellesprosjekt into max5000
getInvitedUsers(int eventID) returns an ArrayList<User> for a given
event
Merge branch 'max5000' of https://github.com/KennethAS/Fellesprosjekt into max5000
endring av datatype i sql-script