This fixes a bug where the continue/cancel buttons were missing
from LockScreen settings in landscape mode.
The change also includes a minor change to enable using the IME enter
key to proceed to the next step.
Change-Id: I2dca0b40e38a128cc0aa637f573da01e779edb73
The power widget now uses the fuzzy-edged widget background.
It has a resonable layout in portrait and landscape.
appwidget_inner is the background for a button on the inside, with a border on the left.
appwidget_outer is the background for a button on the outside (i.e. leftmost); it
does not have a border.
