[1/2] Base: Upgrade network traffic meter

*Updated class name to be less ambiguous
*Replaced the multi-check in settings with a proper listview
*Added the ability to view up-stream, down-stream or both
*Added the option to change how often it refreshes
*Added a check before it updates the status bar to prevent it from
refreshing everything needlessly
*Added icons to show data direction
*Remove unused style attributes

Icon artwork is courtesy android design downloads
Some features were inspired by previous work done by 0xD34D

Change-Id: I9f86292a6adbc5e30967df76fae510be248fc38b
Automatic translation import

Change-Id: If22b91a30a43a39416c5065d02dac767b8d67b1a

Automatic translation import

Change-Id: If9fc62896381bb38ac2034965a113efc0f482835
automatic translation import

Change-Id: Ie99d4aaed9345cfc0f01a4d44abc59372be38fe3
Merge remote-tracking branch 'upstream/android-4.4' into android-4.4