Ajaxify the Remove from cart button

Problem/Motivation

In the /cart page, there is an option to remove a product from cart. Add the ability to remove the product from cart ajaxifically.

Proposed resolution

• Create a sub module, say dc_ajax_add_cart_views, and it will provide the Views integrations
• The sub module is going to provide an ajax remove button (this issue) and ajax update cart button #2910741: Ajaxify the Update cart button
• Write a Views field that will inherit most of the code of commerce_order_item_remove_button
• Ajaxify the submit button, so that upon clicking, the View itself is going to be refreshed/reloaded/re-rendered
• The ajaxify submit button should also refresh the cart block (if present on the same page)

Remaining tasks

Test cases:

Test case 1:

• Add two different products in cart, say Prod 1, Prod 2
• Click "Remove" button beside Prod 1
• Check if Prod 1 has been removed from cart
• Check if Prod 2 is still present.
• Check if quantity of Prod 2 is still same

Test case 2:

• Check if the "Remove" button is really ajaxified. Refer AjaxAddCartTest::testAjaxAddCartForm()

User interface changes

Not yet decided.

API changes

Not yet decided.

Data model changes

N/A