Author: Mihail Geshoski
MDL-60817 core_repository: Show a warning if file extension is modified
http://git.moodle.org/gw?p=moodle.git;a=commit;h=17ddce96769bccc1bbd2a2bcb2d56a9408a22cb4
http://github.com/moodle/moodle/commit/17ddce96769bccc1bbd2a2bcb2d56a9408a22cb4
+ 3.9 en [aliaseschange,core_repository]
+ 3.9 en [confirmrenamefile,core_repository]
+ 3.9 en [originalextensionchange,core_repository]
+ 3.9 en [originalextensionremove,core_repository]