message: Fix time filter in cache
diff: @@ -331,9 +331,7 @@ class BaseViz(object):
  for k in ['from_dttm', 'to_dttm']:
  del cache_dict[k]
  - for k in ['since', 'until']:
  - cache_dict[k] = self.form_data.get(k)
  -
  + cache_dict['time_range'] = self.form_data.get('time_range')
  cache_dict['datasource'] = self.datasource.uid
  json_data = self.json_dumps(cache_dict, sort_keys=True)
  return hashlib.md5(json_data.encode('utf-8')).hexdigest()
  