Author: Tim Hunt
MDL-74295 question bank: add help icons to columns that need it
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d3ef0357067cbac825ae878b334725379b49ff3c
http://github.com/moodle/moodle/commit/d3ef0357067cbac825ae878b334725379b49ff3c
+ 4.0 en [facility_index_help,qbank_statistics]
+ 4.0 en [discriminative_efficiency_help,qbank_statistics]
+ 4.0 en [discriminative_efficiency_link,qbank_statistics]
+ 4.0 en [discrimination_index,qbank_statistics]
+ 4.0 en [discrimination_index_help,qbank_statistics]
+ 4.0 en [questionusage_help,qbank_usage]