Used value: 2

Copy pos before giving it to on_blast because it can modify it; also remove a debug print that had nothing to do here

Implemented nodes:
- Steel Door: Ignores explosion
- Locked Chest: Ignores explosion
- Fire: Ignores explosion
- TNT: Starts burning
- Burning TNT: Explodes immediately
- Gunpowder: Starts burning
- Burning Gunpowder: Ignores explosion

Default/mapgen: Add mapgen aliases for sandstone brick and sandstone brick stair, to enable sandstone dungeons

dont grow cactus on a lying one

use minetest.get_node 2 times less

do a bit what ShadowNinja wrote

add comment

return true if the plant is set

- Mese glows
- Glass + Mese = Meselamp
- New mese mineral texture

Organise and cleanup code

Register blob ores in mgv6 to replace addDirtGravelBlobs
Combine ores and blobs functions