OZP-648: Adding group methods necessary for automatic group behavior
OZP-648: Fixing getByNameAndAutomatic
Merge branch 'master' into feature/ozp-648-current-user

Needed version of getByUsername that doesn't fail for
non-existant users
Merge branch 'master' into feature/ozp-648-current-user
Merge branch 'feature/ozp-648-current-user'