Fix #1270 -- Provide preview for fonts in display settings

src/pretix/control/templates/pretixcontrol/event/display.html

@@ -2,6 +2,10 @@
 {% load i18n %}
 {% load bootstrap3 %}
 {% load hierarkey_form %}
+{% block custom_header %}
+    {{ block.super }}
+    <link type="text/css" rel="stylesheet" href="{% url "control:pdf.css" %}">
+{% endblock %}
 {% block inside %}
     <h1>{% trans "Display settings" %}</h1>
     <form action="" method="post" class="form-horizontal" enctype="multipart/form-data">

src/pretix/control/templates/pretixcontrol/font_option.html

@@ -0,0 +1,2 @@
+{% load i18n %}{% if widget.wrap_label %}<label{% if widget.attrs.id %} for="{{ widget.attrs.id }}"{% endif %} class="preload-font"
+        data-family="{{ widget.label }}" data-style="regular">{% endif %}{% include "django/forms/widgets/input.html" %}{% if widget.wrap_label %} <strong>{{ widget.label }}</strong><br>{% trans "The quick brown fox jumps over the lazy dog." context "typography" %}</label>{% endif %}

src/pretix/control/templates/pretixcontrol/organizers/display.html

@@ -1,6 +1,10 @@
 {% extends "pretixcontrol/organizers/base.html" %}
 {% load i18n %}
 {% load bootstrap3 %}
+{% block custom_header %}
+    {{ block.super }}
+    <link type="text/css" rel="stylesheet" href="{% url "control:pdf.css" %}">
+{% endblock %}
 {% block inner %}
     <h1>{% trans "Display settings" %}</h1>
     <form action="" method="post" class="form-horizontal" enctype="multipart/form-data">

src/pretix/control/templates/pretixcontrol/pdf/index.html

@@ -8,7 +8,7 @@
     {% compress css %}
         <link type="text/css" rel="stylesheet" href="{% static "pretixcontrol/scss/pdfeditor.css" %}">
     {% endcompress %}
-    <link type="text/css" rel="stylesheet" href="{% url "control:pdf.css" organizer=request.organizer.slug event=request.event.slug %}">
+    <link type="text/css" rel="stylesheet" href="{% url "control:pdf.css" %}">
 {% endblock %}
 {% block content %}
     <h1>