Add network stats to statusbar (1/2)

Change-Id: I98437ca6692f42a26e45df72c909da785c11a0b8
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/dimens.xml

Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>