Cherry pick from b72e4bfd

Oscar's default store dashboard doesn't scale well for sites with millions of orders. To limit the impact this page can have on large systems, all queries against orders are now limited to those placed in the last 24 hours. Order's date_placed field is indexed for more efficient queries. I've also removed fields that aren't useful to us (e.g., stock alerts).

Changes the CSS of the credit card field on the
client-side basket checkout. The credit card
icon used to overlay the credit card numbers.
These changes fix that.

https://openedx.atlassian.net/browse/ECOM-6707

* Display form errors from the server on the UI
* Mobile design alignment fix
* Alt attributes for all images
* Catch the ValueError for when a user with empty basket
  opens the basket page. A basket is carried in user
  sessions as a SimpleLazyObject, if it's filled it will
  be commited to the database, but when it's empty, our
  check for vouchers will return a ValueError instead.

This version of the package limits the installed version of PSA to <0.3.0. 0.3.0 introduced a major breaking change, effectively gutting PSA and moving its Django components to a new social-auth-app-django package.

ECOM-6705

Fix basket page link on payment error page.

ECOM-6670

[SOL-2173] Add Backend Validation for End Datetime and Start Datetime

Fix the receipt page style when the footer is displayed

[SOL-2170] Unable to change single to multi courses once course id entered

Client side checkout basket

* Generalizing (old) basket page so that it can accept
  different type of products and supports multi-line.

* Redesign of the new client side checkout basket,
  custom form validation, CyberSource field signing and
  accessibility compliance.

SOL-2113

Fix cybersource receipt page override

Strip out quotes from course title as they cause a Cybersource error.

[SOL-2168] Add Backend Validation for Course Seat Types

[SOL-1955] Add interstitial for CyberSource payments

[SOL-1954, SOL-1955, SOL-1956] New Receipt Page - Frontend

[SOL-2166] Add Backend Validation for Code