add get all employees from DB by position_id
employee list with simple filter by position
fix copy paste
add redirect to employee_edit.php if action edit or new
add if student from db is null (not found in DB)
fix bug, change form to edit after success add new student
edit add new employee without positions
add, update, get employee
change arguments of counts to school_year no actual school year boolean
add count_employees
add count employees and link to admin student and employee