Add some system packages to package list adapter.

As we're using the adapter for notification control stuff, we need to
include those packages, too, as they're throwing notifications as well.

Also optimize code a little.

Change-Id: I8829041a535923e3d93d9566e27eb99c48f25abd
Settings: Fix strings for crowdin

ps2: applications > apps

Change-Id: I99a80f496c28bfa0788c1d7c41da743c93dfdb8e
Settings : Use split action bar when entering profiles externally

Change-Id: I2a93ea98d73d76cdc277cdf4f3a15bb5c4c4d9f4
Settings: Remove unnecessary padding from HeadsUpSettings.

Change-Id: I823aa97f32049dc6c6baf6c859c47219952fe454