app.js, main.js modified, and item.html created.

In app.js, the reference to JQuery was unnecessary, hence deleted.

In main.js, some paths were tested to see if they were needed, and it
turns out they weren´t. So they were deleted/modified.

The template file templates/item.html was added to improve scalability
and mantainability of the code, separating the html from the js code.

All is well for the time being :).