Synchronised GUI with VisualiserInput thread.

- Made StreamedCourse extend Observable
- Initialised StartController after data pulled from network
- Moved VisualiserInput to visualiser module
- Deleted Networking subpackage from visualiser module

#story[782]

visualiser/src/main/java/seng302/Mock/StreamedBoat.java

@@ -31,6 +31,10 @@ public class StreamedBoat extends Boat {
         this.init();
     }
 
+    public int getSourceID() {
+        return sourceID;
+    }
+
     /**
      * Calculates the azimuth of the travel via heading of the boat
      *