Removed all inline <script> tags

src/pretix/plugins/pretixdroid/static/pretixplugins/pretixdroid/pretixdroid.js

@@ -0,0 +1,7 @@
+$(function () {
+    jQuery('#qrcodeCanvas').qrcode(
+        {
+            text: '{{ qrdata|safe }}'
+        }
+    );
+});

src/pretix/plugins/pretixdroid/templates/pretixplugins/pretixdroid/configuration.html

@@ -1,6 +1,7 @@
 {% extends "pretixcontrol/event/base.html" %}
 {% load i18n %}
 {% load bootstrap3 %}
+{% load staticfiles %}
 {% block title %}{% trans "pretixdroid configuration" %}{% endblock %}
 {% block content %}
     <h1>{% trans "pretixdroid configuration" %}</h1>
@@ -9,11 +10,7 @@
         If you try to configure the app, it will ask you to scan the QR code below.
     {% endblocktrans %}</p>
     <div id="qrcodeCanvas"></div>
-    <script type="text/javascript">
-        jQuery('#qrcodeCanvas').qrcode({
-            text: '{{ qrdata|safe }}'
-        });
-    </script>
+    <script type="text/javascript" src="{% static "pretixplugins/pretixdroid/pretixdroid.js" %}"></script>
     <a href="?flush_key=1" class="btn btn-default">{% trans "Reset authentication token" %}</a>
 {% endblock %}