Thanks that worked. At least for the second line. Can I assume the first line is not caused by the theme?
<link rel='stylesheet' id='jquery-ui-style-css' href='http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/themes/ui-darkness/jquery-ui.css?ver=3.7.1' type='text/css' media='all' />
If not, do you have any clue how to find out what causes it?
Is there a way to keep this change when the theme updates?