Added upgrade cost
Added layer upgrade methods
Added missed usage of resources
Fixed bonus resources counting
Message clarification
Message typo
Upgrade and crew bonus tests
Consolidated upgrade method
Added javadoc comment
Updated tests
Fixed no damaged repair
Meesage update
Added repair method
Updated test
Added method to add resources to cargo
Updatet test
Added reource loose method
Added buildVipers method
Fixed resource use
Updated hangar creation