Minor - adding comments, commenting code.
Fixing role permissions.
Minor - removing unused code.
Adding commands in order to use Chash to install Chamilo
Updating vendors
Updating api.lib.php
Updating composer.json/composer.lock
Fixing course link.
Minor - removing commented code.
No need to add the course id because the id are unique now. see BT#6468
Fixing query see BT#6468
Fixing PHP warning.
Adding recalculate exercise result feature see #6422
Adding recalculate feature see #6422
Admin is also ROLE_SESSION_MANAGER
Updating sql db script from Chash.
Removing auto id using a "real" id
sending fix
Fixing order
Fixing exercise/stats.php