Update issue: Cleanup gleez.js and fix icon with BS3 parity
Fixed issue: Update the icon to fa in greet datatables
Fixed issue: Updated Greet Datatables with BS3 parity
Update feature: Better way to to detect the menus in nav or widget for styling
Updated feature: Cerber Theme
Updated feature: Date v1.1.0

+ New syntax for Date::date_time
+ New syntax for Date::date_format
+ New syntax for Date::time
+ Some corrections with class inheritance
+ Cleanup PHPDoc
Merge branch 'feature-bootstrap-3' of github.com:sergeyklay/cms into feature-bootstrap-3