Manual timetabling by drag-and-drop

[Volker Dirr]

I added a new direct move feature. So you don't need to set it always inactive anymore. You can move directly. I also allow to kick conflicting students, teachers or rooms if there is a conflict.

see:
http://www.volker-dirr.de/moveActivity2.mp4

(the old indirect only move is visible here: http://www.volker-dirr.de/moveActivity.mp4 )