Fixed wrong sidebar height when use a field smaller then 1000 pixels height

src/gui/simulator/Terrain.java

@@ -71,7 +71,7 @@ public class Terrain extends JPanel {
     	}
 
     	//initialize sidebar
-    	sidebar = new Sidebar(sideBarWidth, getFestivalHeight(), this);
+    	sidebar = new Sidebar(sideBarWidth, 3000, this);
 
     	//set terrainbackground
     	switch(terrain){