Add response body to InvalidStatusException

app/Core/Http/InvalidStatusException.php

@@ -5,15 +5,22 @@ namespace Kanboard\Core\Http;
 class InvalidStatusException extends ClientException
 {
     protected $statusCode = 0;
+    protected $body = '';
 
-    public function __construct($message, $statusCode)
+    public function __construct($message, $statusCode, $body)
     {
         parent::__construct($message);
         $this->statusCode = $statusCode;
+        $this->body = $body;
     }
 
     public function getStatusCode()
     {
         return $this->statusCode;
     }
+
+    public function getBody()
+    {
+        return $this->body;
+    }
 }