Add an effective date option for Job Role and Analysis codes 1&2

Implement the same process for the Job Role and Analysis Code 1&2 fields, that have been included in the recent enhancements launched for 5 other fields (company, department, location, employment type, reports to).

This will enable the full details to be amended when an individual moves location/team, as in most cases all the employee details will change.

Currently we can amend some details and then create a task to update the remaining details, rather than do all the amendments at the same time.