allow signups while using alternative auth backend

pandora/app/config.py

@@ -57,6 +57,7 @@ def load_config():
         settings.SERVER_EMAIL = config['site']['email']['system']
         config['site']['videoprefix'] = settings.VIDEO_PREFIX
         config['site']['version'] = get_version()
+        config['site']['dontValidateUser'] = not settings.AUTH_CHECK_USERNAME
         if not 'folderdepth' in config['site']:
             config['site']['folderdepth'] = settings.USE_IMDB and 4 or 3