Fixed exceptions and ship_prefabs.xml
Revert "Revert "fixup! Improving small error in PrefabReader and added ResourceReader as system in Game Class""

This reverts commit 482311110cc32c0ff0272c6d593663599451a52f.
Repair ship_prefabs.xml
Merge branch 'Zyga_Working_Branch' of github.com:konkit/ProjectSpaceshooter into Zyga_Working_Branch