Minor fixing PHP notice
Removing require_once libs are already loaded in global.inc.php
Fixing special_course course field when migrating to 1.10
Fixing PHP notices
Adding new block in userportal in order to browse courses, special courses, sessions, session categories with pagination see BT#6048
Updating vendors
Updating gitignore and composer.json
Merge branch 'master' of github.com:chamilo/chamilo-lms