Implemented conditional validators (see #2406)
Fixes #2724: consistent use of absolute and relative routes.
Fixes #2823.
fixed test break.
Merge pull request #2808 from drenty/conditional-validator

Implemented conditional validators (see #2406)
separate id and name of attribute for client side validation
Added Validator::whenClient.
reverted breaking PHPdoc codestyle changes

issue #2852
fixed typo
fixed url helper to not prepend to relative URLs
reverted incorrect renaming.
reverted back change to parsing body params.
guide about conditional validator
replaced tabs with spaces in docs.
removed srand()
Update finnish translation
Merge pull request #2861 from janisto/message_fi_update-1

Update finnish translation
Update yii.php
Merge pull request #2863 from winiarekk/patch-1

Update yii.php
Added missing using statement in Gii.