zoom
double mouse buttons bugfix
drawing improved: lines & cursor
fix: zoom scale label now updated on mouse wheel event
generic tooltip with message stack
bugfix: sprites intercept mouse events on other layers
clarify Sprite boundingRect() doc
bugfix: when changing drawing size, changed the last drawn line's size too
added collapsible buttons to the main window
resources for collapsible widgets
fixed several small issues with drawing
context menu in MapLayer
works, still using map ui
moved the drawing menu in a specific widget
fixed key controls for drawing lines
fix eraser click
fixed several issues with TurnMenu
fixed several issues with TurnMenu
bugfix: reverted bugfix c40635d4 causing glitches during scroll and found another way of fixing it
Merge branch 'master' into TokenItem

Conflicts:
	src/Canvas/Layers/MapLayer.cpp
	src/Canvas/Map.cpp
	src/Canvas/Map.h
	src/Canvas/Sprite.cpp
	src/Canvas/Sprite.h
	src/MainWindow.h
	src/jdrnix.pro