Some improvements to home to overview transition for 0 button mode

- Peek in overview further, and with more overshoot
- Fade out and scale down workspace faster while swiping up
- Scale and translate workspace slower when letting go to enter
  overview (so it doesn't zoom out at warp speed)
- Fade in all apps shelf sooner

Bug: 132455160
Change-Id: Ieafad0ccf9bb587889bc35d536627661db10e358