Added assets for map

src/main/resources/eu/oschl/gui/game.fxml

@@ -57,7 +57,7 @@
                     <Rectangle width="${cell.width}" height="${cell.height}"/>
                 </clip>
                 <ImageView preserveRatio="true" fitWidth="${cell.width}">
-                    <Image url="@images/rooms/well.png"/>
+                    <Image url="@images/map/royal_well.png"/>
                 </ImageView>
             </StackPane>
             <ScrollPane fitToWidth="true" fitToHeight="true" GridPane.rowIndex="1">