Pgsql small fix  (update 2)

[2] Added empty line at the end of file
[3] Removed exception.

Multilevel Nav items

Removed unused columsn from find constraint sql. Fixed typo. Added extra schema check for when a foreign table is not in the same schema. Updated indentation to conform to other classes.

Pgsql driver implementation (update 4)

Fixes #13. Implement DB message source.

Fix use incorrect namespace of Html helpers

Conflicts:
	framework/yii/logging/ProfileTarget.php

Update CompareValidator.php

Fix new method name "getIsAjax" and fix web application class name in logger