Leaderboard

I've updated the module to version 1.0.13 to remove a potential SQL injection and tidy the account saved cards display when there are multiple cards (thanks @Smoky Barnable). @mhsuffolk I'm afraid the current version does not support Apple Pay, etc but looking at the Stripe documentation, it does not look too difficult to add. It just involves adding an extra HTML element to host a 'Payment Request' button which is displayed for certain compatible browsers, and some javascript and server code to support the creation and processing of a 'PaymentRequest' in a similar fashion to the handling of the 'PaymentIntent' in the current version. I'll add it to my list of things to do.