Author: Stephen Vickers
MDL-62599 mod_lti: Replace language string removed in error
http://git.moodle.org/gw?p=moodle.git;a=commit;h=75f020862a29657ab5ab6a667f5eedc0ff510b1a
http://github.com/moodle/moodle/commit/75f020862a29657ab5ab6a667f5eedc0ff510b1a
+ 3.7 en [ltiservice_gradebookservices,ltiservice_gradebookservices]