added widgets for Genealogie Online and Open Archives

Testcase for Genealogie Online:
http://www.genealogieonline.nl/en/genealogie-van-bommel-van-essen/I161.php

Testcase for Open Archives:
http://www.openarch.nl/show.php?archive=elo&identifier=78c990c7-4b9f-8f0f-0358-b933da9830c3&lang=en