Added Webtrees Views support. Provides access to most Webtree tables including user, individuals, families, links and media. It requires Webtrees and Drupal tables to be in the same database which is actually easy to do because Webtrees prefixes its table names by default.
Fixed bug in helper class where Drupal email key was email instead of mail. Prevented log in where new Drupal user was added and primary was Webtrees plus reverse lookup.
