user access to rosetta

[snooopcatt]

task:
user has to edit translations without access to admin interface
problem:
user has to be marked as superuser and staff ( http://code.google.com/p/django-rosetta/issues/detail?id=92 ), but this also grants user an access to admin interface. adding to group "translators" doesn't work as well

[mbi]

@ragzovskii The correct way is to add translators to the "translators" group, and NOT add mark them as either superuser nor staff.

[snooopcatt]

user wasn't in group 'translators' despite admin interface told other