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
Settings : Fix accessibility shortcut

Shortcuts like accessibility, have preferences with titleText rather than
titleRes as their title. Settings only had a override for titleText, which caused
preference screens inside accessibility to not work. This commit addresses that.

Reproducable via :

1. Create a settings accessibility shortcut.
2. Launch shortcut and try to open an of the services

Expected behaviour : Appropriate ToggleAccessibilityServicePreferenceFragment should open
Observed behaviour : Same Settings instead gets relaunched instead

Change-Id: I89b7539672cd7278d51f9e88bac1948669940e59
Show application's package name in the "App info" screen.

Change-Id: I7dac8ffa0b10abb5ff235750e90a96d801b2f919