Network stats custom colors (1/2)

Change-Id: I3c95a70273b111c7776f395f7baa60a77cea95dd

Conflicts:
	core/java/android/provider/Settings.java
NetStats: Add net stats to system bar.

PS2:
PS3:
Hide net stats view when notification area is disabled.

Change-Id: Ib35dd46b026dab00abe73966105806c54266e466

Conflicts:
	packages/SystemUI/res/values/styles.xml
Network stats small changes
- change default color;
- show speed in B/s, KB/s and MB/s;
- scale down text size to 9dp;

Change-Id: Ife85c87afba052abe8ae5e60c079680b8046f34e

Conflicts:
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/res/values/styles.xml