Bug 11578: QA follow-up

Bug 11578: QA follow-up

This patch removes the error raised by tt_valid
 FAIL   koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt
   FAIL   tt_valid
                lines 310

Actually, it fails because translate script does not match strings in
attribute value. In this case, we don't want to translate. This fix is
not necessary.

This patch also adds the licence for the new jQuery treetable plugin.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>