Hidden Statusbar Pulldown (1/2)

Currently the Statusbar can be hidden through various options. While this is on
though, notifications, signal, battery, etc cannot be seen. Sure you could just
unhide it real quick but Hidden Statusbar Pulldown allows you to swipe down and
reveal the Statusbar for a configurable amount of time before hiding again.

Thanks to blk_jack and Steve Spear for the help (im a java noob :D)

Change-Id: I486dae7cb2fb2be117932073925f2f7c0e1e873a
Fix mako build
Status bar Auto-Hide [1/2]

Add an option to auto-hide status bar when there are no
notifications.

PS 2 : Improved Logic

Change-Id: I9f9fdb443f6ed981c1941716491cef757b42f8ba