Reverted changes to elevator blocks
Added alternative Earthquake creation method
Added more physics failsafes
Fixed quakes not unloading after world unload
Re-instated physics entity registration code
Merge remote-tracking branch 'origin/Fuwnayguy' into GenDeathrow

Conflicts:
	src/main/java/enviromine/blocks/BlockElevatorBottom.java
	src/main/java/enviromine/blocks/BlockElevatorTop.java
	src/main/java/enviromine/handlers/ObjectHandler.java