[orga] Allow administrators to deal with css issues

src/pretalx/orga/forms/event.py

@@ -20,6 +20,7 @@ class EventForm(ReadOnlyFlag, I18nModelForm):
     )
 
     def __init__(self, *args, **kwargs):
+        self.is_administrator = kwargs.pop('is_administrator', False)
         super().__init__(*args, **kwargs)
         self.initial['locales'] = self.instance.locale_array.split(',')
         year = str(now().year)
@@ -39,6 +40,8 @@ def clean_custom_css(self):
 
         if self.cleaned_data.get('custom_css') or self.files.get('custom_css'):
             css = self.cleaned_data['custom_css'] or self.files['custom_css']
+            if self.is_administrator:
+                return css
             try:
                 validate_css(css.read())
                 return css

src/pretalx/orga/views/event.py

@@ -64,6 +64,11 @@ def sform(self):
             prefix='settings',
         )
 
+    def get_form_kwargs(self, *args, **kwargs):
+        response = super().get_form_kwargs(*args, **kwargs)
+        response['is_administrator'] = self.request.user.is_administrator
+        return response
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         context['sform'] = self.sform