Controller tests, model tests

Model tests updated: course, section, time_slot, room, course_date,
Helper tests updated: home, application
Controller tests updated: all but home and section,
Updated new time slot to include Saturday (Classes on Saturday?),
Documentation change, routing change

Removed redundant documentation -- it was taking up uneeded space,
Changed delete_all from 'get' to 'delete' and routed it to root,
Changed do_import from 'do_import' to just 'import' when being linked