Merge pull request #63 from escopecz/staging

jQuery dataTable templates and ordering
Improvements Installer

- Tabs Validation
- Language Support
Merge remote-tracking branch 'upstream/staging' into staging
Merge pull request #66 from juliopontes/staging

Installer Improvements
Don't launch session in DI container
PHP 5.6 compat
Dropping duplicate session handling
Replacing JFactory::getUser() with Cobalt User