[PlacesPanel] Port to KFilePlaceEditDialog
This patch ports away from the old PlacesItemEditDialog copy,
which doesn't honour the "applicationLocal" checkbox.
KFilePlaceEditDialog was not exported by KIO, but it will be starting
- Create a new place ("Add Entry" from the panel context menu) and check the "only show in dolphin" checkbox
- Edit an existing (global) place and check the "only show in dolphin" checkbox
Differential Revision: https://phabricator.kde.org/D16824