Allow specific luckperms contexts to be disabled

[Warriorrrr]

Description:

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New Nodes/Commands/ConfigOptions:

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Relevant Towny Issue ticket:

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• I have tested this pull request for defects on a server.

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[NeumimTo]

	registerContext("towny:town", resident -> resident.hasTown() ? Collections.singleton(resident.getTownOrNull().getName()) : Collections.emptyList(), () -> TownyUniverse.getInstance().getTowns().stream().map(Town::getName).collect(Collectors.toSet()));
	registerContext("towny:town", resident -> resident.hasNation() ? Collections.singleton(resident.getNationOrNull().getName()) : Collections.emptyList(), () -> TownyUniverse.getInstance().getNations().stream().map(Nation::getName).collect(Collectors.toSet()));

You are registering same context twice, second one should be towny:nation

[Warriorrrr]

Fixed, thanks