strange design for group tagsets

[Robert Jäschke]

When I select a group for which a post is relevant for and the group has tagsets defined, these appear in a strange layout:

(notice the >)

Furthermore, when I save the post and edit it again, the group is selected in the "relevant for" dialog box bug the tagsets for that group do no appear.

[Daniel Zoller]

Duplicate of #2363.