initial broken cell locking.
Merge branch 'develop' of https://github.com/jtwigg/SpriteBuilder into locked_cell

Conflicts:
	SpriteBuilder/SpriteBuilder.xcodeproj/project.pbxproj
	SpriteBuilder/ccBuilder/en.lproj/MainMenu.xib
Fix memory leaks and optimize memory usage.
Fix readonly InspectorFloatCheck’s
working locked joints and SequencerJoint.
don’t render SequencerJoints on stage.
locking down joints when appropriate.
update cocos2d version.
adding kinetics to SB
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into kinetics

Conflicts:
	SpriteBuilder/libs/cocos2d-iphone
Bugfix:  Cannot build published project. #358. GLKit was missing among the frameworks.
Refactoring: Typo corrected in Cocos2dUpdater class name.
Backup folder name is now rolling with a postfixed number if there's already a folder present.
SB+SK update
Merge branch 'develop' of github.com:apportable/SpriteBuilder into develop-steffen
export contentSize property of buttons to fix size issue
sb+sk
enable localizable text for labels
sb+sk submodule
sb+sk again