Revert "Merge branch 'dev_fabian_search'"

This reverts commit fddf3fecf04965291f41a8eb18d34bd173014b3a, reversing
changes made to 909431e45a68de9779ce37fc0107eddb44559898.
Revert "Merge branch 'dev_ruth_kandidatenwatch'"

This reverts commit 909431e45a68de9779ce37fc0107eddb44559898, reversing
changes made to bc1f779ae7e0b5e08ce8379b845fbc88ea45984b.