[Ark] Implement "Add to archive" option when dragging and dropping onto an archive file in dolphin
Review Request #119890 - Created Aug. 22, 2014 and discarded
This patch implements the "Add to archive" option, which is shown when a user drags and drops files onto an existing archive.
The author seems gone and the patch was lost (due to the ReviewBoard upgrade?).
If there are no objections in the next few days, I will get the sysadmins to discard this review (it will happen anyway after the migration to phabricator).