Eliminated the spanglish in program labels
Extracted Roles navigation functionality from Navigation class to RolesNavigation Class
Extracted Organizational Units navigation Functionality from Navigation class to OuNavigation Class
Extracted Data Entity navigation functionality form Navigation class to DataEntityNavigation class
Added deleteScreenWidgets functions to Navigation class

I also deleted a bunch of unnecessary stuff, so the class look cleaner now
Deleted some unnecessary lines in the navigations classes(Roles,OU and DataNav)