Clean up SCSS on startup.

biscuit/core/__init__.py

+default_app_config = 'biscuit.core.apps.CoreConfig'

biscuit/core/apps.py

+from glob import glob
+import os
+
+from django.apps import AppConfig
+from django.conf import settings
+from django.utils.translation import gettext_lazy as _
+
+
+class CoreConfig(AppConfig):
+    name = 'biscuit.core'
+    verbose_name = _('BiscuIT - The Free School Information System')
+
+    def clean_scss(self):
+        for source_map in glob(os.path.join(settings.STATIC_ROOT, '*.css.map')):
+            try:
+                os.unlink(source_map)
+            except OSError:
+                # Ignore because old is better than nothing
+                pass  # noqa
+
+    def ready(self):
+        self.clean_scss()