Notification of string changes

Author: Damyon Wiese
MDL-58220 oauth2: Remove extra step
Show create google/facebook/office365 buttons on the main page instead
of hiding them behind a click.


http://git.moodle.org/gw?p=moodle.git;a=commit;h=818e789a00bbb3e31a57a073184971454eaca23b
http://github.com/moodle/moodle/commit/818e789a00bbb3e31a57a073184971454eaca23b

- 3.3 en [createnewstandardissuer,tool_oauth2]