Author: Jamie Pratt
MDL-47494 gapselect: moved lang strings for combinable sub questions to
their question type directories
http://git.moodle.org/gw?p=moodle.git;a=commit;h=05091b6de3a8e2026c117ac42b0de293f7013d3c
http://github.com/moodle/moodle/commit/05091b6de3a8e2026c117ac42b0de293f7013d3c
+ 3.0 en [combinedcontrolnamegapselect,qtype_gapselect]
+ 3.0 en [combinedcontrolnamegapselectplural,qtype_gapselect]