Add source code license and link to github to system app

[nobodywasishere]

For #50

[JF002]

Thanks!

Just wondering... maybe the first line "Hello from the developer" is not needed anymore? What do you think?

[nobodywasishere]

When I first found it I was excited because it was like an easter egg. I left it in because of that (though maybe it doesn't have as much of an effect now) and because I didn't want to overwrite another developer's work. Maybe instead I could push it to a 4th page instead of squishing it on the same page?

[JF002]

That's fine, thanks! At first, I put this label as a place holder to show that the widget can handle more than 2 pages, and I thought that would be funny is someone would see the message ;)

So... let's leave it there, thanks!