Add damped spring to Pivot. Spring sorta broken.
Added super refresh to all inspectors.
working Spring joint.
working reference angle.
limit joints rendering.
Working Ratchet.
working tic marks on ratchet.
Working layout box.
only display correct ticks for ratchet.
handle limit handles min/max clamping.
Limits max Min clamping continued.
subtending angle rendering.
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into joints2

Conflicts:
	SpriteBuilder/libs/cocos2d-iphone
motor joints working.
update degrees UI control.
update Cocos2d iPhone version.
CCB's preview image generated with the resolution set now.
Bugfix for #458 New CCB files takes several seconds to appear in resources list.
New method added to update the resource manager immediately for a given filename.
Triggers updating the resource manager upon creating a new file.
Bugfix: #302 Sprite sheet preview images not updated correctly.
Existing images were not overwritten.
Added logging of error messages.
Refactoring: Extracted method for preview image generation.