[1/2] Base: Add custom periods for data usage measurement

This commit adds week and day periods for data usage
measurement, instead of just months.

Change-Id: Ibd0067418435442d8cff922faf8ef0f6a5a28761
Merge "[1/2] Base: Add custom periods for data usage measurement" into android-4.4
Merge remote-tracking branch 'cm/android-4.4' into android-4.4