D9241: Emit 'groupHiddenChanged' signal.

[Renato Oliveira Filho]

renatoo edited the summary of this revision.
renatoo added a dependency: D8450: User can now hide an entire places group 
from KFilePlacesView.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D9241

To: renatoo
Cc: #frameworks