+ getEmployees(): New function to retrieve employees.
> articleNumbers changed from list of int's to list of long's.
+ getShifts(): New function to retrieve shifts.
> Return parameter of getTableList changed from 'return' to 'table'.
> Return parameter of getCourseList changed from 'return' to 'course'.
> Return parameter of getVatGroupList changed from 'return' to 'vatGroup'.