Staff dropdown master update

Added admin/hrms/staff_dropdown_values.php to manage staff profile dropdown values.
Run admin/hrms/staff_profile_schema_repair.php once after upload.
Dropdown values are used in admin/hrms/staff_form.php?id=1, hrms/staff_register.php, and hrms/staff_profile_update.php.
Department and Designation continue to use HRMS Masters.