Fixes for multiplayer and imitation movecraft (flying/floating)

Conflicts:
	mod/ymt/air/AirCraftCore.java
	mod/ymt/air/AirCraftMoveHandler.java
	mod/ymt/air/EntityCraftCore.java
	mod/ymt/air/EntityImitator.java
	mod/ymt/air/ImitationSpace.java
	mod/ymt/air/op/ChestOperator.java
	mod/ymt/air/op/EnderChestOperator.java