Merge pull request #2596 from yiiframework-com-ua/uk_docs

[UK][Guide] Fixing typos
Update yii.php

Polish grammar correction
Merge pull request #2600 from HotscriptGG/patch-1

Update yii.php
Add CWinCache note. Fix CZendDataCache broken link.
IDNA2 fix
Changelog
Added CEmailValidator fix
Merge pull request #2602 from creocoder/idna2-fix

IDNA2 fix
Additions to #2602:

1. Proper Net_IDNA2 usage. Net_IDNA2::decode() and Net_IDNA2::encode()
accepts only domains, not full URLs. Before this fix framework used
to pass full URLs which is wrong usage.

2. If CEmailValidator or CUrlValidator is being used under PHP 5.3.0+,
native `idn` PHP extension will be used (`idn_to_utf8` and `idn_to_ascii`
functions in particular). Otherwise Net_IDNA2 will be used (for PHP
< 5.3.0).
added note about one should always review gii-generated model validation rules
ru: updated zii messages
ru: updated definitive guide
ru: translated comments in blog tutorial
ru: typo fixes
(CModel::prependValidator(), CModel::appendValidator()) (Enh #2259 rework)
Tests, code style fixes and changelog gramar corrections
Merge pull request #2607 from creocoder/cmodel-improve

(CModel::prependValidator(), CModel::appendValidator()) (Enh #2259 rework)