Author: Tim Hunt
MDL-20636 Fix the numerical qtype editing form.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1fa393644035d01fb190baabc65ecb5021dce5f1
http://github.com/moodle/moodle/commit/1fa393644035d01fb190baabc65ecb5021dce5f1
+ 2.1 en [editableunittext,qtype_numerical]
+ 2.1 en [numericalinstructions_help,qtype_numerical]
+ 2.1 en [unitposition,qtype_numerical]