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
Network speed indicator - some value changes

- Font size from 14dp to 12dp
- Decimal points from 2 to 1

Signed-off-by: Janson Kang <temasek71@gmail.com>
Disable network indicator on status bar by default (2/2)

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Traffic.java

Change-Id: I9e62c4985d2f96c1f89417d59a088aece712c37a
Option to hide network speed indicator when there is no traffic (2/2)

Change-Id: Ibb75ada5e39ed0ee880c45c082b3f1c2bb9e44e8
Make network speed indicator updating a bit faster

Change-Id: I3911a3b157a68604e8fa05c4fb24124cd9f622f9