Implemented generator durability system. Due to block metadata limitations, all generators with set durability that have not been destroyed, will be removed upon server restart.
Added/generators forceDestroy command with permission bucik.generators.forcedestroy for forcibly destroying a selected generator.
Fixed a bug where it was possible to place a new generator on top of the previous one's base block while cooldown
Fixed a few bugs with explosions and piston push event handlers