Use the fast track calculation for apps.

This replaces the calculation of the apps category
and add in a calculation for the games category using
the faster GID calculation. This should result in app
sizes loading roughly 10 times after.

Bug: 34204877
Test: Settings unit & robo tests
Change-Id: I78044a8d50f695f8c0a7e04183030232a9719260
6 files changed