Add user_list, admin_list to QueueManager
Add sc_users, sc_admins to QueueManager
users_from_passwd bugfix
Add sc_users, sc_admins to the 'sc' command
Require python3, fix env.sh bug
Bugfixing env.sh again... Didn't know bash sucked so much
I'm just so incompetent

Redirecting errors from env.sh to /dev/null, because duh. Also, using
zsh on my development box occasionally ruins me, like right now.