Add all scenario maps

public/index.html

@@ -112,7 +112,7 @@
     </div>
 
     <div id="content">
-      <input type="checkbox" class="visible" checked />
+      <input type="checkbox" class="visible"/>
       <div>
         Set firing arc:
         <button type="button" class="set-firing-arc" data-size="small">
@@ -143,6 +143,7 @@
                 <select>
                   <option value="map1">Map1</option>
                   <option value="map2">Map2</option>
+                  <option value="map3">Map3</option>
                 </select>
               </label>
             </p>