Changed the canvas controller to read marks from the XML as received from the server (PROTOTYPE)

Gates appear to draw in the correct places although a bit jittery for some reason

Boundary marks are a bit sporadic and still need lines drawn in between

Large refactor of canvas controller and XMLParser still required if these two are going to work together well. Currently canvas controller is a bit of a mess.

#story[469]

src/main/java/seng302/models/parsers/XMLParser.java

@@ -27,8 +27,7 @@ public class XMLParser {
     private RegattaXMLObject regattaXML;
     private BoatXMLObject boatXML;
 
-    public XMLParser() {
-    }
+    public XMLParser() {}
 
     /**
      * Constructor for XMLParser