Next Attempt at a Luhn Algorithm

I have no idea why this works and the other implementation
doesn't. But it does... apparently. At least on my CC.

Change-Id: I1ed0b224bd129f7b5ed6092cf66c8104f3c39686
Check moar fields for CC numbers

Because people add them here too

Change-Id: I6efbda38405123897782bbc07669b5de08b95f01
Localisation updates from http://translatewiki.net.

Change-Id: I1dcbfcb9c066679004bbd68e137c42f13460d5d2
Adding Nicaraguan Cordoba to list of active GC currencies

Change-Id: Ie1a2c5cfcf869109526520805a15c4d56b37c778