added switching functionality between maps in mapeditor

public/static/css/map_editor.css

@@ -1,4 +1,5 @@
 #map {
+    display: none;
     position: absolute;
     top: 0;
     left: 0;
@@ -7,6 +8,27 @@
     z-index: 1;
 }
 
+#gmap {
+    position: absolute;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    right: 0;
+    z-index: 1;
+}
+
+#mapSelection img {
+    display: inline;
+    width: 1em;
+    height: 1em;
+    vertical-align: -0.15em;
+    fill: #ffffff;
+}
+
+#mapSelection img svg {
+    fill: #28a745;
+}
+
 /* modify the cursor for the Leaflet map */
 .leaflet-container {
     cursor: crosshair;