Resolve "Group query fails in some cases (probably when queried by a member/owner)"

Closes #895 (closed)

One can only combine two querysets using |, not a queryset and e.g. a Person.

assigned to @hansegucker

@magicfelix Does this need a changelog entry?

added 4 commits

• 705a6b0d...0a6875e3 - 2 commits from branch master
• abcbda53 - Fix group query by using queryset instead of object
• 91eac1e6 - Update changelog

Compare with previous version

resolved all threads

merged

mentioned in commit 576e80a2