Author: Petr Škoda
MDL-41437 fix and cleanup filter uninstall
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a31e0b40c9d81f3e4d387a8e8bf3306d50a0b94e
http://github.com/moodle/moodle/commit/a31e0b40c9d81f3e4d387a8e8bf3306d50a0b94e
- 2.6 en [deletefilterareyousure,core_admin]
- 2.6 en [deletefilterareyousuremessage,core_admin]
- 2.6 en [deletefilterfiles,core_admin]
- 2.6 en [deletingfilter,core_admin]