Author: David Matamoros
MDL-71017 tool_oauth2: Small fixes on Oauth 2 services UI and tests
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5a6f05c605b0e97de228ebef052cd3d86fc85d60
http://github.com/moodle/moodle/commit/5a6f05c605b0e97de228ebef052cd3d86fc85d60
+ 4.0 en [issuerusedforinternal,tool_oauth2]
- 4.0 en [issuerdisplayas,tool_oauth2]