Author: Marina Glancy
MDL-71017 oauth2: configure some oauth2 services for login only
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0152fdbdff52b795ba1c6783d1d4b24308d6e09b
http://github.com/moodle/moodle/commit/0152fdbdff52b795ba1c6783d1d4b24308d6e09b
+ 4.0 en [issuerusedforinternal,tool_oauth2]
+ 4.0 en [issuerdisplayas,tool_oauth2]