[Findit] Use Findit's own versioned config.

appengine/findit/handlers/config.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Handles requests to the findit config page."""
 
 import json
 
 from base_handler import BaseHandler
 from base_handler import Permission
@@ skipping 81 matching lines @@
     if validation_function is None or not validation_function(configuration):
       return False
 
   return True
 
 
 class Configuration(BaseHandler):
   PERMISSION_LEVEL = Permission.ADMIN
 
   def HandleGet(self):
-    settings = wf_config.Settings()
+    settings = wf_config.FinditConfig.Get()
 
     data = {
         'masters': settings.masters_to_blacklisted_steps,
         'builders': settings.builders_to_trybots,
-        'version': settings.VersionNumber,
+        'version': settings.version,
     }
 
     return {'template': 'config.html', 'data': data}
 
   def HandlePost(self):
     data = self.request.params.get('data')
     new_config_dict = json.loads(data)
 
     if not _ConfigurationDictIsValid(new_config_dict):  # pragma: no cover
       return self.CreateError(
           'New configuration settings is not properly formatted.', 400)
 
-    wf_config.Update(new_config_dict)
+    wf_config.FinditConfig.Get().Update(**new_config_dict)
 
     return self.HandleGet()