Add fastscroll to the Manage applications screen

so you don't need to scroll so much if you have alot of apps
and want to go to the bottom of the list.

Change-Id: I96d892abf53a9da784ae1df056558d4fd3cf64f6
Merge "Add fastscroll to the Manage applications screen" into android-4.4
merge changes from Omni 4.4 into local branch