Renames TaxonName#cached_name to cached_html, adds TaxonName#cached.  Fixes various outstanding model bugs.  BREAKS EVERYTHING with unknown cached_name= error.
Updates to allow for TaxonName#cache related fields.
Merge branch 'master' of https://github.com/SpeciesFileGroup/taxonworks
Playing with TaxonName#get_full_name and related methods.