Fixes #1391: CDetailView: callables (including anonymous functions for PHP 5.3+) could be used as value generators of the attributes.
Fixes #2254:

1. Fixes original issue: AJAX and client validation doesn't work with `errorSummary` set to true.
2. Added `CForm::$showErrors` which controls whether error elements of the each attribute should be rendered.
PHPDoc fixes:

1. Additional `CForm` class note.
2. Better description of the `CForm::$showErrors`.
Fixes #2336: PostgreSQL: CDbCommandBuilder uses `NULL` instead of `DEFAULT` as default value for the primary keys of serial type.
Removed debugging group declaration.
Additional explanation of what `CForm::$showErrors` precisely does.
PHPDoc of `CForm::$showErrors` is now a bit less cryptic.
Fixes #2435: CFileCache entry expiration time could now be embedded into the cache file.
Merge pull request #2507 from lubosdz/master

[SK] Updated locale
Merge branch 'master' of github.com:yiisoft/yii into fixes-2435-CFileCache-enhancements

Conflicts:
	CHANGELOG
PHPDoc fixes and better $embedExpiry property naming.
Fix unit test.
Merge branch 'master' of github.com:yiisoft/yii into fixes-2336

Conflicts:
	CHANGELOG
	tests/framework/db/ar/CActiveRecord2Test.php
Changelog adjusted.
Merge pull request #2349 from resurtm/fixes-2336

Fixes #2336: PostgreSQL: CDbCommandBuilder uses `NULL` instead of `DEFAULT` as default value for the primary keys of serial type.
Merge pull request #2444 from resurtm/fixes-2435-CFileCache-enhancements

Fixes #2435: CFileCache entry expiration time could now be embedded into the cache file.
[Uk] Updating guide
[ci skip]
Merge pull request #2511 from yiiframework-com-ua/uk_docs

[Uk] Updating guide
[ci skip]
Fixes #1924: CLogFilter::$dumper added.
"CHtml::activeLabel()" has been fixed to resolve attribute label for tabular input in case custom "for" has been specified.