Status bar!

I added a status bar which show the current time. It is very basic, but makes the OS look way more friendlier in my opinion. Sorry for the weird messages in the main window, I am currently debugging my printf implementation.

Roadmap

I still have a problem with printing dates: The year 2006 would be printed as 206, because the RTC has seperate registers for year and century, so if century is 20 and year is 6 it prints 206.