added destroy.js.erb for responding to synapse destruction. Also select edges by default on creation in create.js.erb

app/views/synapses/create.js.erb

@@ -28,12 +28,13 @@ if ( Mconsole != null) {
       });
     temp.data.$direction = d;
     Mconsole.fx.plotLine(temp, Mconsole.canvas);
+    selectEdge(temp);
     Mconsole.fx.animate({  
-      modes: ['edge-property:lineWidth'],  
+      modes: ['edge-property:lineWidth:color'],  
       duration: 400  
       });
 }
 else {
   json = <%= @synapse.selfplusnodes_as_json.html_safe %>
   initialize("chaotic");
-}
+}