Modernizr 2.8

Also, removed redundant tests, added useful tests, amended themes to move unsupported features into IE8 stylesheet.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5811 2fea6a4d-a838-0410-917b-93a53c48e9d2
IE8 specific stylesheet for Hive admin theme

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5812 2fea6a4d-a838-0410-917b-93a53c48e9d2
Minified CSS

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5813 2fea6a4d-a838-0410-917b-93a53c48e9d2