METRO-71: Updates to MODS form and alter cleanup xsl so the relateditem with xlink:href isn't removed.
Merge pull request #23 from matthewperry/7.x-METRO-71

METRO-71: Updates to MODS form and alter cleanup xsl so the relateditem ...
Update to create path for topic authority
Merge pull request #24 from matthewperry/7.x-METRO-71

Update to create path for topic authority
Fixed subject/name/namePart and updated none options to be blank
Merge pull request #25 from matthewperry/7.x-METRO-71

Fixed subject/name/namePart and updated none options to be blank
Moving the empty options to the top so they appear first
Merge pull request #26 from matthewperry/7.x-METRO-71

Moving the empty options to the top so they appear first in the drop downs