are failing but will be fixed/completed soon by MDL-19057

Added much needed documentation to the portfolio "scripts" (the libs are all
fine), and moved all parameter fetching from the body of the file to the top.

by new drop_enum_from_field() available in 2.0

MDL-18577 drop enums support - step3: Drop enums from generator classes. Only code used to drop enums remains until Moodle 2.1

MDL-19030 even uglier hack - do not try to add id to labels of static element - they do not have it; merged from MOODLE_19_STABLE

MDL-19030 very ugly hack - do not try to add id to labels of element group - they do not have it; merged from MOODLE_19_STABLE

MDL-19030 fixed xhtml strictness when label attached to frozen element; merged from MOODLE_19_STABLE

"MDL-18486, 1. hide toolbar, pagination when doing global searching, 2. display empty directory in local pluign"

MDL-19028 Hiding hidden category from student report instead of grade items. See code diff for better explanation. Merged from MOODLE_19_STABLE