validity of tags needs to be defined

[Robert Jäschke]

If someone tags a resource with just for:GROUP tags, he gets an error "please enter valid tags". This is due to that the resource does not contain the for:tag since its a system tag.

Some fixes and their problems: - add for: tags to tag set. PROBLEM: when getting group copies, for: tags are also copied - check validity: if (!tags.empty() || !forusers.empty()) { ... PROBLEM: if user is not allowed to post to the users, the resource might contain no tag at all ... (although it should contain the for: tags, even if they got not copied)

[Robert Jäschke]

Hallo Flori, Das werden wir bei der Neuimplementierung des Postens beachten müssen!