USER STORY: Set up card payment

[johnamdickson]

Epic: Payment Functionality #35

User Story: As a user I can make a card payment for selected products so that I can pay for the goods that I want to buy

Acceptance Criteria:

• A functional card payment solution implemented
• The card payment system styled per site aesthetic.

Tasks:

• [x] Add stripe element to checkout page.
• [x] Add required Javascript code to enable functionality of stripe element.
• [x] Implement suggested and bespoke styling to match the site aesthetic.
• [x] Link up public and secret keys.

[johnamdickson]

Stripe payment element added to checkout page and styled to fit with site aesthetic. Public and secret keys added to env.py file.

[johnamdickson]

Javscript added to enable stripe element functionality and confirmed as operational on the Stripe developer dashboard.