[Suggestion] Add a flag to disable SimpleClans war for a specific type of field

[darklordwonton]

It would be cool to have the ability to set certain fields to not lose their effect on warring clans like other fields do. With this feature server owners could have weaker protections that work when war is happening (i.e. they could block destroying blocks with tools but not explosions) as well as stronger protections that lose their effect when war is declared.