Allow all widgets to be closed, still in dev
RotoContextPrivate::renderInternal: simplify
Bug fix: all selected nodes can now be moved again
Fixed a bug where the disabled state of a track would change the colour
of the multi instance node to black.
Also make sure not to track disabled tracks (not checked)
oops
RotoContext: work around a cairo bug
Roto: cairo antialiasing produces artifacts, use feather instead
Choice_Knob::getHintToolTipFull();: new method
RotoContext: more safety, use defines for shared strings, set hints
RotoPanel: add tooltips
RotoPanel: better tooltips
RotoContext: better help
Merge branch 'workshop' of https://github.com/MrKepzie/Natron into workshop

Conflicts:
	Global/GitVersion.h
Dot and Backdrop really go to « Other » grouping, not ToolSets
RotoCOntext: format, improve readability
RotoContext: remove dead code
update GitVersion
Merge branch 'workshop' into GuiLayout

Conflicts:
	Global/GitVersion.h
	Gui/Gui.cpp
	Gui/ProjectGui.cpp
Bezier: kill copy-paste
RotoContextPrivate: explain