File handler system
Using a common basis for the contextmenu in file stuff (browser/dialog/external evokation).
Based on the Menu.headless stuff. Using dynamic hidden/priority which is already implemented.
(from redmine: issue id 2309, created on 2016-04-07 by benjamin.fischer, closed on 2016-05-18)
- Relations:
- child #1669
- child #2423
- parent #2302