added money display to the ConstructionPanel,
added captain name display to the ConstructionPanel,
added a tooltip for displaying the costs of an object
and some small refactoring
adapted MoneyTest
inserted a flag in Stock; true means the stock should be empty, false it should add random items
adapted the object prices and changed price label for materials
Merge branch 'master' of https://github.com/Laranto/Airship-Captain