code tidy-up

Signed-off-by: semteacher <semteacher@gmail.com>
code clean-up to moodle 2.5 and 2.6 style

Signed-off-by: semteacher <semteacher@gmail.com>
Additional update view_osce_report and print

Signed-off-by: semteacher <semteacher@gmail.com>
fix errors in code clean-up

Signed-off-by: semteacher <semteacher@gmail.com>