MDL-44548 mod_scorm: force an external sync to check for updated files.
MDL-47631 report_participation: fixed filtering by letter
MDL-47686 assign: Fix restoring from a mod_assignment backup.

This was only working for admins.
MDL-47657 mod_glossary: Fixed wrong error message on edit timeout.
MDL-47684 mod: better validation of rating options
Merge branch 'MDL-47686-27' of git://github.com/damyon/moodle into MOODLE_27_STABLE
Merge branch 'MDL-47657-27' of git://github.com/gurgus/moodle into MOODLE_27_STABLE
Merge branch '47684-27' of git://github.com/samhemelryk/moodle into MOODLE_27_STABLE
MDL-47710 qformat_gift: fix bahat fails due to different ids in exports
Merge branch 'MDL-47710_27' of git://github.com/timhunt/moodle into MOODLE_27_STABLE
Merge branch 'm27_MDL-44548' of https://github.com/danmarsden/moodle into MOODLE_27_STABLE
Merge branch '47631-27' of git://github.com/samhemelryk/moodle into MOODLE_27_STABLE