SystemUI: Network speed indicator (1/2)

Conflicts:

	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/status_bar.xml
	packages/SystemUI/res/values/styles.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/status_bar.xml

Change-Id: I8abec8c75ad8b6bfd89afadf33b77886e959a4b8

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