[Leveler] Updating badges has no effect

[zawnk]

When adding a new badge and then entering the same command but with ,for example, a changed price, the changes are not updated in the DB, even though the message is sent that says it got updated.

I assume this error comes from the missing string conversion of the server ID in line 1829 https://github.com/fixator10/Fixator10-Cogs/blob/155944165350ca99a8f006d375628d2246da5f60/leveler/leveler.py#L1829