Minor - format code
Moving main/default_course_document folder inside data see #6636
Minor - Format code
Minor - format code
Updating chosen lib
Minor - format code
Using common advance setting button.
Moving main/default_course_document inside data/ see #6636
Minor - adding comments, format code
Fixing install bug.
Fixing create course error.
Don't show the header/footer
Updating Chash.
Undo htaccess change.