@Issue#44 WIP Add warning outline to the left tab bar. Remove Tab Button.
Merge branch 'develop' into issue_44

Conflicts:
	SpriteBuilder/SpriteBuilder.xcodeproj/project.pbxproj
	SpriteBuilder/ccBuilder/AppDelegate.m
Merge pull request #69 from jtwigg/develop

Develop
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into issue_44
@Issue#44 add warning icons to Warning Cells