View Lessons arranged student refs CT#7439
update css progress bar CT#7409
Merge branch 'C7409' of https://github.com/aragonc/chamilo-lms into aragonc-C7409
Merge branch 'aragonc-C7409' into 1.9.x
Minor - Code style + visibilities
Minor - Add PHPDoc
Redirect admin to the admin page on first login - refs #7414