• Verify that all block properties are accurate and consistent to what they should be, based on vanilla properties and the original mod's properties (vanilla consistency takes some priority over that though).

Fixing up all the TODOs in the block registry regarding stuff that may have been moved to block properties probably also falls under this ticket.

• NOTE: I don't think the flammability register needs to be replaced by anything, the access transformer for it just needs to be uncommented.

New values:

• Holystone: 1.5 destroyTime/strength
• Gravitite Ore: 3.0 destroyTime/strength
• Holystone Bricks: 1.5 destroyTime/strength, 6.0 explosionResistance
• Carved Stone: 1.5 destroyTime/strength, 6.0 explosionResistance
• Angelic Stone: 1.5 destroyTime/strength, 6.0 explosionResistance
• Hellfire Stone: 1.5 destroyTime/strength, 6.0 explosionResistance
• Slab values are correct.