Remove duplicate usabilitywiki related apple touch icon

Remove orphaned lucenesearch.css from wikipedia docroot

Change-Id: I48563ee791a3b85221b1dd91686e0542a0680415
Moved all apple-touch-icon.png images to bits. Set $wgAppleTouchIcon where
appropriate.

Bug: 55917
Change-Id: Iba8fafbab81b8b3365e3f0386f0aa5f65ca72dfd
Compress apple touch pngs

Change-Id: I2626957ed77074b7c6a026721ce13ab74999c448