(FR #908) Brazil requires extra personal infos

The fields will show up on every GC payment method, when the donor is geolocated
to Brazil, but values are only mandatory when donating using Boletos.  If we
decide to implement Brazil BT, we will need the fields to be mandatory there as
well.

Change-Id: Ib0b3de3d76e1a98a253cf9a9f4f88dc0ec141d14
Merge "(FR #908) Brazil requires extra personal infos"