Subjects are unique on URN and Procedure Date.
Added other surgical specialities.
Updated fields to have more options. Fixed a number of typos.
Merge branch 'feature/field-fixes' into develop
Added subject index columns.
Added description to postcode form field.
Fixed typo in subject listing and ordered subjects by entry id.
Merge branch 'feature/subject-listing-columns' into develop
Merge branch 'release/2014040803'