Fix some style error introduced during the merge

cas_server/auth.py

@@ -141,6 +141,7 @@ class DjangoAuthUser(AuthUser):  # pragma: no cover
         else:
             return {}
 
+
 class CASFederateAuth(AuthUser):
     user = None
 

cas_server/utils.py

@@ -192,6 +192,7 @@ def get_tuple(tuple, index, default=None):
     except IndexError:
         return default
 
+
 class PGTUrlHandler(BaseHTTPServer.BaseHTTPRequestHandler):
     PARAMS = {}