Heyho,

As of now, JER does not respect the settings set on a server for spawn-npcs or generate-structures.
That could misslead users in thinking "Hey! I can get this block by trading with an npc!" and they run into the world trying to find the unfindable.
It would be cool if there was a config-option to just disable those tabs.
i.e.:

show_dungeonchests_tab = false