Code museum now points to the GWT.css in com.google.gwt.user instead of maintaining its own copy.

Patch by: jlabanca
Review by: jgw (desk review)




git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2644 8db76d5a-ed1c-0410-87a9-c151d255dfc7