Clean-up: Fix import order in kobo.py, and other minor formatting

changes.

cps/kobo_auth.py

@@ -46,14 +46,17 @@ Some possible alternatives that require more research:
 from functools import wraps
 from flask import request, make_response
 from werkzeug.security import check_password_hash
+
 from . import logger, ub, lm
 
 USER_KEY_HEADER = "x-kobo-userkey"
 log = logger.create()
 
+
 def disable_failed_auth_redirect_for_blueprint(bp):
     lm.blueprint_login_views[bp.name] = None
 
+
 @lm.request_loader
 def load_user_from_kobo_request(request):
     user_key = request.headers.get(USER_KEY_HEADER)
@@ -64,4 +67,4 @@ def load_user_from_kobo_request(request):
             if check_password_hash(str(user.kobo_user_key_hash), user_key):
                 return user
     log.info("Received Kobo request without a recognizable UserKey.")
-    return None
+    return None