LP#1744385: Various improvements based on testing

LP#1744385: Various improvements based on testing

 * Improve author and publisher display fields
 * Reimplement Simple Record Extracts using Display Fields
 * Address potential failure in combined search collection
 * Provide useful helper function for inspecting transformed records
 * Implement MODS transforms specified by LoC documentation but not
   actually included in the stylesheet
 * Expand highlighting use to publisher, edition, and physical description
 * Reifying schema from updates

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>
Signed-off-by: Dan Wells <dbw2@calvin.edu>