Add --no-progress-bar option to commands

src/documents/management/commands/document_sanity_checker.py

@@ -8,8 +8,16 @@ class Command(BaseCommand):
         This command checks your document archive for issues.
     """.replace("    ", "")
 
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--no-progress-bar",
+            default=False,
+            action="store_true",
+            help="If set, the progress bar will not be shown"
+        )
+
     def handle(self, *args, **options):
 
-        messages = check_sanity(progress=True)
+        messages = check_sanity(progress=not options['no_progress_bar'])
 
         messages.log_messages()