LockScreen layout, button style, and owner info fixes

- enable OwnerInfo to appear in status1 if dedicated view not present.
- force all status lines to be singleline and marquee.
- fix justification in landscape layouts.
- use buttonBarStyle for buttons on all LockScreens.
- reduce the size of the clock to fit in landscape.
- no longer show "Draw a pattern to unlock" help message in LockPatternView.

Change-Id: I1ff51550e2180f9d912c8f710ad5e2fd2424d373