Re-enable moving events between collections in korganizer
Whatever bug was happening when it was disabled, seems to be fixed by
now. The moving works well in my tests.
Moving to another collection in the same DAV resource, works (graphically),
moving to another resource (icaldir), works (I can see the file on disk).
Reviewers: dvratil, vkrause
Reviewed By: vkrause
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D20340