Implement browser-side models

From the browser-side of the application you should be able to Create, Update, and Delete existing models -- this will use jQuery and ajax functionality.

Start by locating the browser-side model entry points and existing model operations, then inspect how jQuery and AJAX are used in the application. Done should mean existing models can be created, updated, and deleted from the browser, but the issue does not name files or tests to verify.

Written by the indexing model from the issue text.