Cleaned up remoteMap drawing code using ES6 modules

static/remoteMap.html

@@ -2,7 +2,7 @@
 <head>
 	<%- include("head.html") %>
 	<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.0.4/socket.io.js"></script>
-	<script src="remoteMap.js"></script>
+	<script type="module" src="remoteMap.js"></script>
 </head>
 
 <body>