OSIS-1392 Correction Collapse close by default
OSIS-1392 Correction Collapse close by default

	modifié :         base/templates/education_group/training_tree.html

uclouvain/osis,uclouvain/osis,uclouvain/osis_louvain,uclouvain/osis_louvain,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis_louvain,uclouvain/osis