show course teaching for tutors at home page
sidebar icon size adjust
don't record submission activities for staff
created queued jobs to schedule mass emails and update scheduled time
fix for error page when update submission grade
client side validate mission close time to be after open time
new mission notification
added new training email notification
added mission due email notification template
database side mission start and end time validation
schedule email notification for new missions and trainings. update schedule when mission or training is updated
email notifications preference setting
precompiled assets