Maintain hierarchy on "undo" commands

[Thinjon100]

For administrative actions like mute, ban, etc., record the user that executed the command. If someone else attempts to unmute/unban, check the user-level relationship:
If owner did the command, only the owner can undo it.
If administrator did the command, only another Admin can undo it.
Below Admin, you must be the user that executed the command (or outrank?) to undo.

There are a few potential ways this could be configured... but it could prevent disagreeing mods from just undoing each other.