Notification Shortcuts & WiFi display (2 of 2) - Port from Slimroms (Slim bean)

Added notification shortcuts to the notification panel and also the option to display the
current WiFi Network connected to.

Settings placed into following location:
System Settings -> System -> Notification Drawer
Two options added Notification shortcuts - This opens the second preferencescreen with all settings for the notification shortcuts.
Show Wifi network name - Checkbox to enable or disable the Wifi network name displaying on the notification panel.

Screenshot 1: http://i49.tinypic.com/333wff6.png
Screenshot 2: http://i50.tinypic.com/2uh2y45.png

Compiled and tested with v21, working well all activities work correctly and display
a set of predefined shortcuts and the ability to choose custom shortcuts.

First commit is for android_frameworks_base

Change-Id: I34f0dc7aefb97c272b01479947403d1bde8ac895