Implement static custom search option
- overridden by real custom search
- default look-and-feel
(from redmine: issue id 1002, created on 2018-02-20tgradl, closed on 2018-08-06)
- Relations:
- relates #1104
(from redmine: issue id 1002, created on 2018-02-20tgradl, closed on 2018-08-06)