Move decorator for TooManyLoginAttempts into general decorated module

Currently, this is missing in gunicorn_registry which causes 500s when user logins become throttled

endpoints/api/__init__.py

@@ -105,14 +105,6 @@ def handle_api_error(error):
   return response
 
 
-@api_bp.app_errorhandler(model.TooManyLoginAttemptsException)
-@crossdomain(origin='*', headers=['Authorization', 'Content-Type'])
-def handle_too_many_login_attempts(error):
-  response = make_response('Too many login attempts', 429)
-  response.headers['Retry-After'] = int(error.retry_after)
-  return response
-
-
 def resource(*urls, **kwargs):
   def wrapper(api_resource):
     if not api_resource:

endpoints/decorated.py

@@ -5,6 +5,7 @@ from flask import make_response
 from app import app
 from util.useremails import CannotSendEmailException
 from util.config.provider.baseprovider import CannotWriteConfigException
+from flask.ext.restful.utils.cors import crossdomain
 from data import model
 
 logger = logging.getLogger(__name__)
@@ -25,4 +26,13 @@ def handle_configexception(ex):
              'Please make sure the mounted volume is not read-only and restart ' +
              'the setup process. \n\nIssue: %s' % ex)
 
-  return make_response(json.dumps({'message': message}), 400)
+  return make_response(json.dumps({'message': message}), 400)
+
+@app.errorhandler(model.TooManyLoginAttemptsException)
+@crossdomain(origin='*', headers=['Authorization', 'Content-Type'])
+def handle_too_many_login_attempts(error):
+  msg = 'Too many login attempts. \nPlease reset your Quay password and try again.'
+  response = make_response(msg, 429)
+  response.headers['Retry-After'] = int(error.retry_after)
+  return response
+