[KFilePlacesView] Mount place when dropping onto it
Make a copy of the QDropEvent
including its QMimeData
so we can replay the urlsDroppedEvent
once setup has succeeded.
It's what Dolphin has been doing and complements !746 (merged)
Was able to drag a place and drop it, had it mounted and then got the choice of copy/move/link, and I was able to copy a file to the now mounted storage