Author: Jamie Pratt
MDL-47494 gapselect: NOBUG change to string identifiers
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f37cb12ed0c06f159282137eedd332beeed949a7
http://github.com/moodle/moodle/commit/f37cb12ed0c06f159282137eedd332beeed949a7
+ 3.0 en [pluginname_link,qtype_gapselect]