Added toggle to show failed tests on graph

re #285

app/Helpers/SettingsHelper.php

@@ -4,6 +4,7 @@ namespace App\Helpers;
 
 use App\Events\TestNotificationEvent;
 use App\Setting;
+use Cache;
 use Carbon\Carbon;
 
 class SettingsHelper {
@@ -53,6 +54,10 @@ class SettingsHelper {
             ]);
         }
 
+        if($name == 'show_failed_tests_on_graph') {
+            Cache::flush();
+        }
+
         return $setting;
     }