fixed exception check in test.
avoid throwing the same type of  new db exception.
Sphinx ignore group removed from phpunit run script
Sphinx unit tests fixed.
Remove extra var
Docs on autoloading and helpers
Provided example setting YII_DEBUG to false
Merge pull request #1346 from slavcodev/clean-var-dumper

Remove extra var
Use backquotes to quote column and table names for sqlite (related with #1318)
Added Application::getMail().
Fixed test break using file transport.
refactored EmailTarget with the new mailer interfaces.
Refactored MessageInterface::send().
doc fix.
Docs on using behaviors
Structure for console application docs
More docs on performance
Better docs structure and minor fixes
Added reference to Composer section of the guide from 1.1.x differences page
More TDB for the guide