Fix #49. Get personal data from contact point (vcard) resources

This branch fixes issue #49.
It changes the vcardperson template to get all data from the specified person-resource or a schema:ContactPoint (vCard) which the person specifies with: `?resourceUri schema:location ?vcard`. If the data cant be found there it looks for a vcard as follows: `foaf:Person schema:location ?vcard` which is the default/fallback vCard for all persons.