Remove superfluous and erroneous imports.
Fixes #2449: CSqlDataProvider causes an error when CDbCommand with enabled PDO::FETCH_OBJ mode used as SQL source.
Data was rewritten.
Enhancement for #1604. Note about SQLite peculiarity on batch insert.
Merge pull request #2451 from resurtm/fixes-2449

Fixes #2449: CSqlDataProvider causes an error when CDbCommand with enabled PDO::FETCH_OBJ mode used as SQL source.
Merge pull request #2450 from resurtm/fixes-2321

Fixes #2321: CGettextPoFile is now able to parse multiline msgid and msgstr declarations.
Fix CMysqlColumnSchema::extractLimit for ENUM values containing comma

Fixes #2454.
Merge pull request #2455 from blueyed/2454-CMysqlColumnSchema-extractLimit-fix-explode

Fix CMysqlColumnSchema::extractLimit for ENUM values containing comma
Wording fix.
range-requests added
Update CWebUser.php
Update CWebUser.php
Update CHANGELOG

Conflicts:

	CHANGELOG
Update CWebUser.php

typo fix
Update CHANGELOG

new->enh
Conflicts:

	CHANGELOG
Cherry Pick Merge of PR #2463 branch 'ivokund-webuser'

* ivokund-webuser:
  Update CHANGELOG
  Update CWebUser.php
  Update CHANGELOG
  Update CWebUser.php
  Update CWebUser.php
Merge branch 'master' of https://github.com/lubosdz/yii
Fixed code styling and few typos in documentation.
Merge branch 'master' of https://github.com/lubosdz/yii
Update tests/travis/README.md

A rather cosmetic change introducing [relative links](https://github.com/blog/1395-relative-links-in-markup-files).
Merge pull request #2464 from DaSourcerer/patch-18

Update tests/travis/README.md