Properly fixed metric updating

// cc @jbrooksuk

app/Bus/Commands/Metric/UpdateMetricCommand.php

@@ -88,7 +88,7 @@ final class UpdateMetricCommand
     /**
      * The order of which to place the metric in.
      *
-     * @var int
+     * @var int|null
      */
     public $order;
 
@@ -124,11 +124,11 @@ final class UpdateMetricCommand
      * @param int                            $places
      * @param int                            $default_view
      * @param int                            $threshold
-     * @param int                            $order
+     * @param int|null                       $order
      *
      * @return void
      */
-    public function __construct(Metric $metric, $name, $suffix, $description, $default_value, $calc_type, $display_chart, $places, $default_view, $threshold, $order)
+    public function __construct(Metric $metric, $name, $suffix, $description, $default_value, $calc_type, $display_chart, $places, $default_view, $threshold, $order = null)
     {
         $this->metric = $metric;
         $this->name = $name;

app/Http/Controllers/Dashboard/MetricController.php

@@ -153,8 +153,7 @@ class MetricController extends Controller
                 Binput::get('display_chart', null, false),
                 Binput::get('places', null, false),
                 Binput::get('default_view', null, false),
-                Binput::get('threshold', null, false),
-                null,
+                Binput::get('threshold', null, false)
             ));
         } catch (ValidationException $e) {
             return Redirect::route('dashboard.metrics.edit', ['id' => $metric->id])