Author: Jean-Michel Vedrine
MDL-34738 qformat blackboard: blackboard format is broken
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8a8dd7d8c8a4330d306f6d34edd0c7b7b68a38b4
http://github.com/moodle/moodle/commit/8a8dd7d8c8a4330d306f6d34edd0c7b7b68a38b4
+ 2.3 en [defaultname,qformat_blackboard]
+ 2.3 en [importnotext,qformat_blackboard]
+ 2.3 en [notenoughtsubans,qformat_blackboard]