[1/2] Base: DownloadManager: add support pause/resume/stop notifications

Add pause, resume and stop functions to make user can pause, resume and stop downloads by manual in downloads application.

Change-Id: I82ffff5a539448faab8933e2b47591199bf24cb9
[1/2] SystemUI: Network speed indicator

Omni change id: I88e7cdfe20342c695a33383db36bf80bb4ffe009

Appeared after
http://forum.xda-developers.com/showpost.php?p=50643911&postcount=3361

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

PS3: Rebase

Change-Id: I2cc12bd888d592ea9c3a401b859b63a254614a18
[1/2] SystemUI: Network speed indicator

Omni change id: I88e7cdfe20342c695a33383db36bf80bb4ffe009

Appeared after
http://forum.xda-developers.com/showpost.php?p=50643911&postcount=3361

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

PS3: Rebase

Change-Id: I2cc12bd888d592ea9c3a401b859b63a254614a18