Author: Dan Bennett
MDL-43752 repository_s3: added endpoint select box to settings page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9b71e3aff02a1c69c826d8349d9c870f3ccb0777
http://github.com/moodle/moodle/commit/9b71e3aff02a1c69c826d8349d9c870f3ccb0777
+ 2.9 en [endpoint,repository_s3]