Author: Damyon Wiese
MDL-58220 tool_oauth2: Lang string fix
http://git.moodle.org/gw?p=moodle.git;a=commit;h=bc55c88ba002c1b3faa6bf6477ce6c1e79ca0437
http://github.com/moodle/moodle/commit/bc55c88ba002c1b3faa6bf6477ce6c1e79ca0437
+ 3.3 en [discovered_help,tool_oauth2]