Merge pull request #469 from sergeyklay/master

More additions
Update feature: Minor popup css cleanup
Update feature: Added loading icon until popup is ready with events
Update feature: Better dataTable detection in popup dailog and cleanup
Fixed issue: ajaxform js cleanup
Update feature: Configure popup to use the specefied dataTable instead autodetect
Fixed issue: Fix some errors handling in controllers
Update feature: Converted admin/user delete to popup dailog
Updated translation: Amended Russian
New feature: Added File::getUnique helper
Updated feature: Minor Post addition

+ Used File::getUnique
+ Used Config::load instead Kohana::$config->load
+ Amended PHPDoc
+ Fixed i18n
Updated feature: Remove not needed internal check before redirect
Updated feature: Cerber Theme