no-jira: set version 10.0.9
Added tag OpenOLAT 10.0.9 for changeset 6874c2d0b8d7
no-jira: description is too long for an external_ref
FXOLAT-478: tree colors fixed
Merge OpenOLAT 10.0 to OpenOLAT default branch with e07e3eff24a527ad00fb111424b55b8bcf7f655a