mdi area scrollbars
Merge branch 'master' into Sprite

Conflicts:
	src/jdrnix.pro
layers + press and release events
Drag and drop
folder names CamelCase + Map class
the user can now move a little his cursor when deleting a sprite
fix token selection
more flexible START_DRAG_DISTANCE + restored map edition
Merge branch 'Sprite'

Conflicts:
	src/ChatWidget.h
	src/MainWindow.cpp
	src/TokenMenu.cpp
	src/jdrnix.pro