Prevent divide by zero (luanti-org#2106)

This forces all explosions to damage entities within the 1 node
range. If that needs to be disabled, the damage_radius needs to
be set to 0.

Prevent divide by zero (luanti-org#2106)

This forces all explosions to damage entities within the 1 node
range. If that needs to be disabled, the damage_radius needs to
be set to 0.

Change "Junglewood" to "Jungle Wood"

Fire: Slow down fire spread and reduce lua load

Increase chance value of ABMs
Disable ignition from a distance
Only detect neighbouring extinguishing nodes
Fix code style issues and add comments