tests improved, verify added
beforeSubmit function after global validation all fields forms
"Using 3rd-Party Libraries" guide added
"Using 3rd-Party Libraries" guide updated
Missing "md" extension added for "Using 3rd-Party Libraries" guide part
Merge branch 'master' of github.com:yiisoft/yii2 into 1837-3rd-party-doc
except option added
changes of other pr reverted
changelog added
filter fix
added possibility to save messages to be translated
code format fixed
Added fixture classes.
removed trash code.
forgotten rows
Fix typo version

https://github.com/yiisoft/yii2/blob/master/extensions/redis/Cache.php#L16
algorithm of data insertion approved
Merge pull request #2019 from marsuboss/patch-1

Fix typo version
Fix french messages
added redis version req to readme

fixes #1875