FIX color changing for iOS6. Working on signaling between trackVC and helpVC for iPad.
FIX - nav bar color bug - iOS7 was using iOS6 code
REFACTOR - way that the helpVC determines which parts to show. Now based on notification sent out at the time that the trackVC loads
FIX - variable height text view sizing issues. Simplified the impementation to take the intrinsic content size, found in layoutSubviews, rather than require the width to be told to the class. CLEANUP