Alumni: Read both hidden & regular fields for Employer Job Posting

There are 3 data fields that we are migrating from Rich Text Editor to Pure Text Editor.

They are:

1. About the Employer
2. Job Description
3. Qualifications

To keep the existing collected records, we keep the original Rich Text Editor fields, but make it hidden (no longer visible to users while posting new Career Opportunities).

But codes should be modified so that it will read first data from New Pure Text Editor field (for new form entries).

And if there is no data in the new field, go read from the correspnding old field (entered from old Form).