Bug 20102: Remove attribute "text/css" for <style> element used in staff client templates

Bug 20102: Remove attribute "text/css" for <style> element used in staff client templates

This patch modifies staff client templates to remove the "type"
attribute from <style> tags. The attribute is no longer valid.

To test, apply the patch and confirm the changes to the templates. The
appearance of the staff client should be unchanged.

Validating pages from the staff client should not return any errors
related to the <style> "type" attribute.

Signed-off-by: Jose-Mario Monteiro-Santos <jose-mario.monteiro-santos@inLibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit e55d16f0da01dc474dc2f4541926c1daf609aff0)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>