agree create 3

rugwebsite/templates/rugwebsite/gdpr.html

@@ -27,8 +27,8 @@
             {% csrf_token %}
             {% bootstrap_form form %}
             <button class="btn btn-default" type="submit">Toestemming geven</button>
-            <br/>
-            <a href="javascript:close_window();">Geen toestemming geven</a>
+            <br/><br/>
+            <a href="javascript:window.close();">Geen toestemming geven</a>
         </form>
       <br/>
       {% endif %}