All apps pull up work

b/28917826
b/29469966
b/29542376

- Move state transition to when the finger is lifted and not when
the view settles.
- Refactor the vertical pull detector to use bit operation to define
which direction scroll to allow.
- Fixed many issues regarding screen rotation
- Fixes issue where slowly sliding the all apps goes into overview mode
- Fixes issue where quick slide up leads to animation starting from middle

Change-Id: I2384a0fcc5550e17359a044ef506bcc66507da5f