Added cart field in the Profile model (many-to-many field of CardListing)
Add basic "add to cart" button to individual card listing
^ works (adds to cart and redirects user to their cart page)
Cart page links listed cards back to their card listings
What still can be done
Toggl "add to cart" to "remove from cart" button if the user has already added a card to their cart
Allow user that listed the card to remove the cardlisting
Move "add to cart" button to a better place
Add notification of "card listing added to cart successfully" when a card has been added to the cart (instead of directing to the cart page)
Cart page
When clicking on the card listing it takes the user to that listing
Card listing
When clicking on the "add to cart" button, it adds the cardlisting to the user's cart (if it isn't in their cart already) and directs the user to the cart page
Changes
What still can be done
Cart page
When clicking on the card listing it takes the user to that listing
Card listing
When clicking on the "add to cart" button, it adds the cardlisting to the user's cart (if it isn't in their cart already) and directs the user to the cart page