Added a new field email to IndividualSearchResults and a modification of...

This modification goes along with a pull request to Vitro that adds to the search page the ability to download results from a search in XML or CSV format.  The additions for VIVO include 
 * adding getEmail to IndividualSearchResults
 * overwriting the VItro version of search-csvResults.ftl with a VIVO version that includes
   * Email address where applicable
   * Title where applicable

You'll need feature/search-download for Vitro to test these changes.