fix XHTML tags which are invalid and obsolete on HTML5
Since we are switcing to XHTML 1.0 > HTML 5 some of our html is invalid and some are obsolete, which is this pull fixes. These include: Removal of CDATA tags (invalid on HTML5) Removal of type attribute on link and script tags (purely advisory, works without it) Signed-off-by: Mustafa Can Elmacı <mustafacan@elmaci.net>