Update cpfRelation, fixes #4379

Squashed commit of the following:

commit ee50661ad7e56d0e70b5b1ae1a0d11be04df5025
Author: José Raddaoui Marín <raddaouimarin@gmail.com>
Date:   Sun Feb 17 05:25:05 2013 +0100

    Cosmetic changes

commit 64af9ab397d5567873e1b97062bd9cdc0fbe1614
Author: José Raddaoui Marín <raddaouimarin@gmail.com>
Date:   Sun Feb 17 04:37:13 2013 +0100

    Add cpfRelation descriptiveNote import

commit 2bcf4617def84a2ea288b3a7553aa2f133d016fa
Author: José Raddaoui Marín <raddaouimarin@gmail.com>
Date:   Sun Feb 17 04:34:38 2013 +0100

    Change cpfRelation link and add description export