Update Genericons to version 3.0. Note that the whole playing-nicely-with-themes-and-other-plugins thing is really iffy right now, see http://core.trac.wordpress.org/ticket/25085

git-svn-id: https://plugins.svn.wordpress.org/quickshare/trunk@771348 b8457f37-d9ea-0310-8a92-e5e31aec5664