Interim changes to split settings screens
break out notification screens
Merge branch 'develop' into feature/resettings

* develop:
  Update UIIconsHamburger.
  Set some alignmentRectInsets on backButtonImage to make it position better in the navbar.
  Remove UINavigationBarBlueFlatBack image. We have tintColor and translucent = NO now. SFAppDelegate sets navigationbar.translucent to NO since the appearance proxy (used in SFCongressAppStyle) doesn't support that.
  Update back button stuff in SFPeoplePickerNavigationController to match SFCongressNavigationController. Make sure accessibility label exists.
  Rename backButton to more generic clearButton.
  Update navigation back button code, making backButton use a UIBarButtonItem with a clear image. Clean up leftover methods in UIImage+SFCongressAppStyle. See #352.
  Update Crashlytics.
  Remove extra Images.xcassets at project root in favor of one in Resources directory. This may mess @jcarbaugh up a little since he was looking at alternative InfoIcon images.
Update project to resolve signing issue