Better error handling of powerlevel command #632
Description
I ran !mjolnir powerlevel @user:domain #channel:server accidentally just now in our moderation room and forgot the power level.
It returned an error message for every single room we have added to moderate. This was nearly 200 rooms.
A better solution would be to catch the syntax error and advise the user.
If variables != 3, then fail with Error: powerlevel requries 3 variables user@domain powerlevel #room@server