Add credit card image

stolen from Brad Frost’s single cc form field thing on github.
Remove some useless code from the svg images
Move token to the ccForm where it belongs
Revert "Remove some useless code from the svg images"

This reverts commit e46d366aa5d5cda8916ec41d44965f3f12dc8817.
Fix form blocking

It was blocking one level up which isn’t kosher.