Fixes, Features & New levels!

Complex objects with joints can now properly go through portals with all parts teleporting along with the one that first touched the portal

Added laser gun special object

Added shield generator special object

Created new 2 and 4 player levels "space ship battle" which demos shields and laser guns in "Space" folder

fixed issue preventing rocket ship rope shorten/tighten function from working with xbox controller

fixed many other minor issue

fixed issues with adding custom images to levels sometimes change when adding more custom images later switching due to changed sort order of custom images.

fixed crashing in a specific case