on user account page, show eq groups and reservations; add missing requires to schedule class and user class; for equipment_group.php add check for a requried web param, and corresponding error message; add explicit form action to logout form; tweak display text on index page; remove index auth logout test functionality because simpletest seems not to handle the situation
util function to process a datetime string to a meaningful hash; util function to generate a time range string from two datetime data structures (string or hash); toString for TimeBlock; toString for Schedule; toListItemLinked for Reservation; db_linked function to start a list item tag (should generalize this later...)