Items can grief Polis claims

[jarredr]

Polis: v2.6.8
SpongeForge: v1655
Forge: v2044

I've found a few items that will grief Polis claims. If they can't be fixed perhaps creating a list of grief items will help server owners know what to disable. I'm sure there's plenty I have missed.

Vanilla:
TNT - will grief if placed next to claim or if fired into claim

Tinkers' Construct:
EFLN - a throwable TNT, griefs in the same way as TNT

Botania:
Rod of the Shifting Crust - replaces items in a 7x7 area inside claims
Rod of the Terra Firma - flattens land inside claims