Fixes to all apps pull up work

b/28917826

- 2+ workspace page also slides up
- pull up touch interaction doesn't trigger only when yslop > xslop
- animation duration should be set independently when all apps button is used.
- workspace state is correctly set (drag and drop from the trays work)
- after lock screen, hotseat is positioned correctly
- Remove initial jump when sliding up
- Improved tuning on sliding
- Alpha value set differently on backbround and content of all apps

Still not fixed:
- Landscape
- Search edit text box styling
- All apps scroll bar

Change-Id: I817094b0f1ada5052ee604539459f556a99cadf1