[FIX] hr_attendance: fix display issues

- in employee form view: separate "Status" group from "Attendance" group
- make "Attendance" group only visible to attendance officers
  this also fixes the use_pin group that would everyone to view pins if enabled
- in employee kanban view, fix the removal of the attendance widget to display
  the fa-user icon again, instead of a simple red dot. (commit c468cfdd )