CUBRID Database 9.0 Support.
Ref: converted spaces to tabs according to Yii coding conventions.
Ref: converted spaces to tabs.
Merge branch 'cubrid-database-support' of https://github.com/kadishmal/yii into kadishmal-cubrid-database-support

* 'cubrid-database-support' of https://github.com/kadishmal/yii:
  Ref: converted spaces to tabs.
  Ref: converted spaces to tabs according to Yii coding conventions.
  CUBRID Database 9.0 Support.
CUBRID copyright, version and indentation fixes

adjustments to PR #1893
Code style

adjustments to PR #1893
Allow sql files diff & preview in gii
Backport Request::getPreferredLanguage() from yii2
Eager loading note added to 'Relational Query Options' docs
jquery.yiiGridView fixed to be able handling special chars if history is enabled
jquery.yiiListView fixed to be able handling special chars if history is enabled
Issue #3253 added to CHANGELOG
Issue #3253 corrected to #2519 at CHANGELOG
'State.data.ajaxUrl' renamed to 'State.data.url'
'jquery.yiiGridView' and 'jquery.yiiListView' allows to handle all update options via history state data
Issue #3061 added to CHANGELOG
Merge pull request #3329 from klimov-paul/3297-relation-options-eager-loading

 #3297: Eager loading note added to 'Relational Query Options' docs
finished review on cubrid
Merge branch 'master' into kadishmal-cubrid-database-support

* master: (789 commits)
  'summaryTagName' and 'emptyCssClass' options added to CBaseListView
  Missing entries added to CHANGELOG
  'cli' mode detection at 'CConsoleApplication' fixed
  Eager loading note added to 'Relational Query Options' docs
  Fix CSysLogRoute.php file comment
  Fixes #3324: add syslog support
  CDbConnection ODBC related fixes before merging
  Add ODBC to the requirements checker
  Fix #132: CDbConnection now supports ODBC
  Better fix for <script async="false"
  Fixed #3258
  Fixed #3283
  Remove async from list of Special Attributes so that it is possible to use async=false per issue: #3314
  typo fix in guide
  COciSchema: read column comments from another schema
  Update yii.php
  Add changes #3298 to CHANGELOG
  Added check for the existence of a link href attribute pager
  Added check for the existence of a link href attribute pager
  Update yii.php
  ...
added CHANGELOG for CUBRID

fixes #1893