Arduino project: Scrolling text on 16x2 LCD controlled by pushbuttons

In this project I'm going to use an Arduino Uno to scroll some text on a 16x2 character LCD which is controlled with a pair of pushbuttons. Even if there's nothing very fancy or original here I think I came out with some features that could be of interest for many beginners and the project can easily be extended to do more. You can consider it as an "advanced Hello World!" example.