D8825: do not show edit bookmarks action if keditbookmarks is not installed

[Aleix Pol Gonzalez]

apol accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R294 KBookmarks

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D8825

To: sitter, #frameworks, apol
Cc: apol