Link to jQuery UI CSS, dont @import

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5465 2fea6a4d-a838-0410-917b-93a53c48e9d2
IE10 doesn't need -ms- prefix on CSS keyframes

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5466 2fea6a4d-a838-0410-917b-93a53c48e9d2