Redirect lending cart to login form if user is not logged in
Small fix
Add Stripe API client library
Add Stripe integration to lending cart
Make z-index #menu smaller than z-index modal box
Add "Pay With ..." buttons
Fix tooltip font-size
Small fix
Make "Pay With ..." buttons more spaced out
Update description in Stripe checkout form
Rename STRIPE_PUBLISHABLE_KEY to STRIPE_PUBLIC_KEY
Small fix