FW : Bring Scrollable toggles back

ps 1:  Implements scrolling toggles.
	We might need to play with the spacing/padding
	but it apears to work
ps 2:  Apply some padding/dimens to the scrollable toggles
	bring background for tile into the traditional/
       scrollable toggles as well.

Change-Id: Ie9b9146f1d8d4e902f3f3b5660f511585ea7c895
Signed-off-by: Zaphod <mwilson@acesappraisal.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java
FW: add spacers to Traditional Toggles.

Scrollable toggles merge also included adding backgrounds to
traditional toggles.  on rows that didn't have 6 Toggles,
those backgrounds would be stretched.  This adds
spacers on the ends of the last row to force the toggles/
backgrounds to keep the proper size/shape.
samples:

http://twitpic.com/cecf8t
http://t.co/32t0A6Qc6T

PS2:  Include background drawables on spacers. Looks a little more
uniform.  Samples:

http://t.co/ryaHhizEgF
http://t.co/fw5QZAsocQ

Change-Id: Id086383ec72e682b8f005e9a17b6ecb6bd0e018b
Signed-off-by: Zaphod <mwilson@acesappraisal.com>
SysUI : Fix opacity of LastApp Icon

Thanks to Nitroz for making alpha corrected versions of the
last app icon.

Change-Id: I2e8a9ae36e32f03aa36d3218c74d76b88123e64e
Signed-off-by: Zaphod <mwilson@acesappraisal.com>
SysUI:  Prevent Kill-Task from killing SystemUI.

If recents screen was active when Kill-Task button pressed, SysUI
was getting killed (causing wallpaper reset).  This
prevents SystemUI from being killed.

Change-Id: I3b669b29e5c244246ac02ad1ce6b4e39f7270aaa
Signed-off-by: Zaphod <mwilson@acesappraisal.com>