add creeper explosion don't destruct areas and unbreakable nodes
add creeper explosion don't destruct areas and unbreakable nodes

add creeper explosion don't destruct areas and unbreakable nodes
fix mobs crash if spawn on unknown node

sys4-fr/server-minetestforfun,Gael-de-Sailly/minetest-minetestforfun-server,MinetestForFun/minetest-minetestforfun-server,Coethium/server-minetestforfun,MinetestForFun/minetest-minetestforfun-server,crabman77/minetest-minetestforfun-server,paly2/minetest-minetestforfun-server,MinetestForFun/minetest-minetestforfun-server,Gael-de-Sailly/minetest-minetestforfun-server,LeMagnesium/minetest-minetestforfun-server,sys4-fr/server-minetestforfun,crabman77/minetest-minetestforfun-server,Coethium/server-minetestforfun,MinetestForFun/server-minetestforfun,paly2/minetest-minetestforfun-server,MinetestForFun/server-minetestforfun,MinetestForFun/server-minetestforfun,Gael-de-Sailly/minetest-minetestforfun-server,Ombridride/minetest-minetestforfun-server,Ombridride/minetest-minetestforfun-server,sys4-fr/server-minetestforfun,Ombridride/minetest-minetestforfun-server,LeMagnesium/minetest-minetestforfun-server,Coethium/server-minetestforfun,LeMagnesium/minetest-minetestforfun-server,crabman77/minetest-minetestforfun-server