Define Favicons on Organizer-level

src/pretix/control/forms/organizer.py

@@ -262,6 +262,13 @@ class OrganizerDisplaySettingsForm(SettingsForm):
         ],
         help_text=_('Only respected by modern browsers.')
     )
+    favicon = ExtFileField(
+        label=_('Favicon'),
+        ext_whitelist=(".ico", ".png", ".jpg", ".gif", ".jpeg"),
+        required=False,
+        help_text=_('If you provide a favicon, we will show it instead of the default pretix icon. '
+                    'We recommend a size of at least 200x200px to accomodate most devices.')
+    )
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)

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

@@ -27,6 +27,7 @@
             {% bootstrap_field form.theme_color_success layout="control" %}
             {% bootstrap_field form.theme_color_danger layout="control" %}
             {% bootstrap_field form.primary_font layout="control" %}
+            {% bootstrap_field form.favicon layout="control" %}
         </fieldset>
         <div class="form-group submit-group">
             <button type="submit" class="btn btn-primary btn-save">