Apply settings immediately, like other wallpapers.

Don't have an explicit "OK" button to apply the current preset, but just
apply it immediately, like other wallpapers with settings do.
Also use a different default setting that is more in line with the
overall ICS theme, and update the thumbnail accordingly.
b/5288769

Change-Id: Ibe35b74c3d5c9ad35708b98007d9bb0a396a25c2
6 files changed