Fix high priority bugs for event in Göttingen
- TagCloud was not looking at queried results but re-fetched terms per collection ->done
- Change optimal to most frequent ->done
- Multiple expressions on the same facet…what happens? ->no fix required
- Navigate into collection results…no schema selection possible anymore ->fixed
(from redmine: issue id 56, created on 2018-01-22tgradl, closed on 2018-01-22)