Claim Chunk

Add modify list to claim block - players listed also have access rights, so don't need to be in both lists
(fake players can be listed for allowing devices to modify blocks in claims, but can't tell who owner is, so be careful)
Updated /claims to be able to limit list of only close claims (e.g. /claims 2)
Can use Minecraft paper to copy settings from claim block (shift right click to clear settings)