Launching the gesture nav tutorial in portrait mode on tablets causes fragments with the wrong layout file to be inflated (uses the default phone layout).
Reinflating fragments whenever they need to be switched. Added a new rotation prompt fragment
Flag: ENABLE_NEW_GESTURE_NAV_TUTORIAL
Fixes: 291062054
Test: Launched the tutorial in portrait mode and landscape mode, then rotated the screen several times. tried with the flag disabled as well.
Change-Id: I0215d7589285007d04ef81d3a63e404c2cda3895
