Squashed 'course/format/topcoll/' changes from 770997f..285f866

285f866 V2.5.3.8

git-subtree-dir: course/format/topcoll
git-subtree-split: 285f8661eb5d5b34c883359a56ade57ce5b9433f
Merge commit 'b2d0e33080f4e40308e10fc4217acbe1de0d1f8a' into test-MOODLE_25_STABLE
Mise à jour du composant moodle-format_topcoll MOODLE_25