EffectInstance: check scale and image dimensions before launching render
fix warnings
AppInstance & Node: readability
Gui: readability
delete spurious icons & sort GuiResources
Merge pull request #166 from olear/master

Add support for FreeBSD.
polish render scale support
update openfx
fix OS X icon
Rod is passed in parameter why this warning ?
Restore bw compatibility for old Format serialisation
Restore bw compatibility for RotoDrawableitem
add a few SVG files
Fix bug in video engine with time domain
Throwing an exception here is too strong… just set the RoD to be
0,0,1,1 to be safe.
Merge branch 'workshop' of https://github.com/MrKepzie/Natron into workshop
Don't add null formats to project
Forgot to register the version of the format class to boost
Fix the user roi in ViewerGL
EffectInstance: remove obsolete warning