Allow undoing drag and drop
The nice drag and drop feature might frustrate the user if the user accidentally drag the event to some other date because there is no way undoing the change.
It might be nice if an undo (with Ctrl+z shortcut) feature is provided so that the user can undo the drag and drop change.
Along with, it might be good to lock drag and drop, and unlock only on request (with some button or so).
Link to original bug (#769471)
Design Tasks
TODO
Development Tasks
TODO
QA Tasks
TODO