Basic admin commands

[Conner-Anderson]

To start with, these should assume the admin knows what they are doing. No confirmation. We can fix that later.

Delete user

• [x] Revoke tag (maybe a stupid-check to see if it would break history?)
• [x] Change item (should change any value in any cell of the database. Obviously this is dangerous, but it is needed anyways.
• [ ] Change item, safe (a set of commands that more safely change common variables in the database. Needs more thought.
• [x] Force register (some means of registering another user in case something goes wrong. I'd suggest it just takes the admin through the normal process, but with changes with ChatBot that make it affect a different user.

[Conner-Anderson]

Roles are now changed manually through Discord's functions, not a command.