Changed class to data

Whyle adding cards into html the code was putting info inside class, now every info is on data attributes.
Remove returning jquery objects

Removed jquery objects that were being returned by the view modules
Select and Remove cards

* Add card click events so when you click them, the main controller knows and add this card info on selectedCards (variable).

* The remove card from deck is already implemented, but I still have to create the cards thumbnails and add at them click events to call the remove card function.

* Card Select Screen, Back and Done buttons click events are implemented
Add card thumbnail

This feature MUST be corrected. The html is currently being insert in a dumb way, the code adds the same card thumbnail insted of adding just the quantity.