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>