Refactor data transfer

This release represents a change in the way data is passed to and from the form field vue component. Prior to this release, data was passed in the form of a comma delimited string. Now the data is passed as an object that contains all the options specified when the field was configured along with the true/false status of each option.

This allows for the use of integers as keys which was not previously supported. The three modes of data save are unaffected and this release should not cause any BC issues assuming fields were correctly set up in the first instance