Fixing SCORM export/import see BT#8426 #7208
Merge branch '1.9.x' of ssh://github.com/chamilo/chamilo-lms into chamilo19
Minor - fixing PHP warning.
Fixing breadcrumb for course session teachers see BT#8458
Adding option $_configuration['allow_lp_return_link']; see BT#8457
Add version name for 1.9.8.3
Merge branch '1.9.x' of github.com:chamilo/chamilo-lms into 1.9.x
update rapid installation documentation - refs BT#8441
Add ViewerJS  -refs BT#8274
Implement ViewerJS  in showinframes.php -refs BT#8274
Minor - adding commented 'allow_lp_return_link' conf

see d942e8e92804ab4b7577cb5a7b143144ec605ed7
Minor - Adding comments, removing white spaces, fixing PHP warnings.
Install just allowed plugins in the course - refs #7222
Merge pull request #328 from FraGoTe/7222

7222
Merge branch '1.9.x' of github.com:chamilo/chamilo-lms into 1.9.x
update rapid installation documentation - refs BT#8441
update rapid installation documentation Spanish - refs BT#8441
update rapid installation documentation Spanish - refs BT#8441
update rapid installation documentation Spanish - refs BT#8441
Add changelog and readme to bbb plugin to indicate table structure change for sessions