fix issue #1315

used e.g. for less client side compiling

Added example for not using field()
http://www.yiiframework.com/forum/index.php/topic/49225-activeform-how-do-you-call-label-input-and-errors-individually/

swapped docs and Exception to type InvalidParamException

fixed PhpDoc by swapping to {@inheritdoc}

[WIP] Elasticsearch

far better than depending on fat guzzle

fixes #1319

* master:
  fixed broken sphinx AR::attributes() declaration
  updated properties of extensions
  fixed cubrid limit
  added redis Session
  allow redis connection to be configure directly in cache
  removed unneeded setting.
  refactored redis cache.

Conflicts:
	extensions/redis/README.md

Model::attributes() has been made static

as suggested in issue #1316

fixes #1316

* 'master' of github.com:yiisoft/yii2:
  removed unneeded setting.
  refactored redis cache.