(bug 46720) attempt PayPal localization

This is working for one-time donations, but currently does not for
recurring donations.  The API params seem to be correct, so I'm
assuming this is a bug or docbug on PP's end, for the moment.

There are really strange problems with the way we're forced to
specify locale, for example, they have full spanish translation,
but the interface will not appear in Spanish unless you happen to
be located in Spain (or falsify the "country=ES" param...)

Change-Id: I6afd7f57c6c2e7f7d26c18804c5eef13804404ef
Display fixes for Adyen

I've attempted to make Adyen not look like comlete ass. I suspect
it didn't work too well though.

Change-Id: Ib3d31f9e63b18aa70cc4fe411165143feeb5623a
Localisation updates from http://translatewiki.net.

Change-Id: I7623d2594b3062b891a6e2f55e75d4afc0e29404
Temporarily removing VND from the list of supported GC currencies as per their instructions

Change-Id: I7d8360b921c14cf7b0ba663b38b909f6efa9d8f9
Localisation updates from http://translatewiki.net.

Change-Id: Iba8262375b7d05ff0c16e6bdcc5de1664eb14c4c