Author: Gerard (Gerry) Caulfield
MDL-30935_in_lti_change_role_from_instructor_to_teacher
http://git.moodle.org/gw?p=moodle.git;a=commit;h=76fe39b8d8feafc8daca52fd1b721e7447201d09
http://github.com/moodle/moodle/commit/76fe39b8d8feafc8daca52fd1b721e7447201d09
+ 2.2 en [delegate,mod_lti]
+ 2.2 en [imsroleadmin,mod_lti]
+ 2.2 en [imsroleinstructor,mod_lti]