some ui trader stuff

core/src/com/galaxytrucker/galaxytruckerreloaded/Main.java

...galaxytrucker/galaxytruckerreloaded/Model/Map/Planet.java

...erreloaded/View/Buttons/InGameButtons/ShopSellButton.java

...xytrucker/galaxytruckerreloaded/View/Screen/GamePlay.java

...rucker/galaxytruckerreloaded/View/UI/Events/EventGUI.java

...ker/galaxytruckerreloaded/View/UI/Events/ShopElement.java

...galaxytruckerreloaded/View/UI/Events/ShopSellElement.java

...ytrucker/galaxytruckerreloaded/View/UI/Events/ShopUI.java

...alaxytrucker/galaxytruckerreloaded/View/UI/Map/MapUI.java

...ytrucker/galaxytruckerreloaded/View/UI/Ship/ShipView.java

...laxytruckerreloaded/View/UI/ShipInformation/WeaponUI.java