Refactor Drupal.AJAX calls in Quick Edit module JavaScript once #1533366 is committed.

Problem/Motivation

Several deficiencies have been noted in Drupal.ajax(): #1533366: Simplify and optimize Drupal.ajax() instantiation and implementation. Because of these, we have built several workarounds into the JavaScript of the Quick Edit module. These include creating and inserting DOM elements as temporary anchors for ajax event triggering. Ideally, we would fire ajax calls from JavaScript without the need to associate them with DOM elements.

Proposed resolution

There are two @todo statements in the Quick Edit module JavaScript. One in edit.js and one in EntityModel.js that refer to this issue number. They need to be addressed once #1533366 is committed.

Remaining tasks

Get #1533366: Simplify and optimize Drupal.ajax() instantiation and implementation committed.
Address the @todos in the Quick Edit module JavaScript.