Add tint methods to UIImage category
Merge branch 'refs/heads/feature-tint-uiimage'
Add NSURL category
Add overlay image with color method
Add UIImage normalization
Add rotate method do UIImage class
Add new rotate method to UIImage category
Merge branch 'master' of git.assembla.com:systappletoolbox

Conflicts:
	UIImage+SYSTExtension.h
	UIImage+SYSTExtension.m
Fix rotate image
Add UIColor category
SYSTRate implementation in progress
Remove SYSTRate
Add in UIDevice category methods to test system version
Add UIApplication category to get status bar
Add UINavigationItem methods to correctly place buttons
Add NSAttributedString method to get the height
Add a method to test if notification are enabled
Add base window to UIApplication category
Encapsulate iOS6 and iOS7 implementation of rect for NSString
Add hash methods