implemented filters
[confetti] / templates /
drwxr-xr-x   ..
-rw-r--r-- 830 attendees.css.sh
-rw-r--r-- 1558 attendees.html.sh
-rwxr-xr-x 387 frame.html.sh
-rwxr-xr-x 2141 view_attendee.sh
-rwxr-xr-x 0 view_course.sh