Adding hosting_limit_active_courses setting see BT#9175
Blocking course edition see BT#9175
Minor, format code + fixing PHP warnings.
Minor - format code, removing var_dumps
Minor - format code.
Improving sql speed see BT#8852
Fixing function name get_all_document_data, format code.
Minor - format code.
Showing course icon instead of classic green course icon see BT#9183

Config value: course_images_in_courses_list
Minor - format code.
Adding delete option see BT#9183
Merge branch '1.9.x' of https://github.com/chamilo/chamilo-lms into 9071