Feature Request: Add more functions in mouse to presenting

[Rafael Reinoldes]

Nowadays, wireless mouses are prety commom and I think we should give more attention to how we could present something with a mouse.

I think we should add an extra mode um mouse handlers that could remap mouse keys in the following way:

- mouse1: Advance slides (whith animations)
- mouse2: Cicle beetween the two main modes when presenting (present <-> draw)
- mouse3: Enter view mode (aka. press 'i'

- whellUp: Advance slides (whitout animations)
- whellDown: Rewind slides (whitout animations)

In this way, some one will be able to present with a mouse and (optionaly) some notes in hand.

If the presenter have a notepad with a hardcover it will be able to walk freely to the 'stage'and also control the presentation and make any drawing.