Campaigns feature, Added DMs can delete entire Campaign

[JanHM97]

When making a Campaign and adding a new DM via the token, these new DMs can view the campaign normally. They can also edit the core details of the campaign (visibility, who can join, name).
BUT, when an added DM is looking at the campaigns he is in, under the DMing columm, he can just entirely delete any campaign he is a part of

This will remove all players, and all DMs, as well as all existing logs and magic items, though the campaign name is still visible for and can be opened by the person that originally made it (completely empty though).

I assume that the "delete campaign" function for DMs that joined is supposed to be "leave campaign" like it is for palyers that joined.