Summary:
`FloatFromLeft` configuration was wrong. its animation was ok but the swipe back was wrong. for example you had to swipe from left to right for a `back` action which should be swipe from right to left.
`HorizontalSwipeJumpFromRight` is the same as `HorizontalSwipeJump` but for RTL layouts.
Closes https://github.com/facebook/react-native/pull/4815
Reviewed By: svcscm
Differential Revision: D2766720
Pulled By: androidtrunkagent
fb-gh-sync-id: 2b60f2d238a8f8e5b27dbfb307887934be477c81