Tablet/AllApps fixes.

- Fixing regression where the power button did not dismiss Apps/Customize
- Fixing regression in number of icons in portrain in AC, and removing legacy peek var for calculations (5122724)
- Fixing spacing in shop button on tablet
- Fixing bug where the apps pane was being changed as we were animating (5139543)

Change-Id: I3a3e5f224fd92e99072c830d13423d195179e7c7
10 files changed