FloatFromLeft scene configuration fixed. HorizontalSwipeJumpFromRight…

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

Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js

@@ -515,6 +515,9 @@ var NavigatorSceneConfigs = {
   },
   FloatFromLeft: {
     ...BaseConfig,
+    gestures: {
+      pop: BaseRightToLeftGesture,
+    },
     animationInterpolators: {
       into: buildStyleInterpolator(FromTheLeft),
       out: buildStyleInterpolator(FadeToTheRight),
@@ -574,6 +577,28 @@ var NavigatorSceneConfigs = {
       out: buildStyleInterpolator(ToTheLeft),
     },
   },
+  HorizontalSwipeJumpFromRight: {
+    ...BaseConfig,
+    gestures: {
+      jumpBack: {
+        ...BaseRightToLeftGesture,
+        overswipe: BaseOverswipeConfig,
+        edgeHitWidth: null,
+        isDetachable: true,
+      },
+      jumpForward: {
+        ...BaseLeftToRightGesture,
+        overswipe: BaseOverswipeConfig,
+        edgeHitWidth: null,
+        isDetachable: true,
+      },
+      pop: BaseRightToLeftGesture,
+    },
+    animationInterpolators: {
+      into: buildStyleInterpolator(FromTheLeft),
+      out: buildStyleInterpolator(FadeToTheRight),
+    },
+  },
   VerticalUpSwipeJump: {
     ...BaseConfig,
     gestures: {