Add "shuffle play" to categories in home page.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4141 104adb81-38d2-4886-885e-82898e39ce25
Simplified html for drop shadow.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4142 104adb81-38d2-4886-885e-82898e39ce25
Dim coverart on hover.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4143 104adb81-38d2-4886-885e-82898e39ce25