Display device and product ID (maybe with show/hide option)

[dovatti]

It would be really useful to display (maybe with show/hide option) device and product ID; in many cases - like mine - you'll have to check a wide range of devices, and anytime go to Settings>System>About it's really annoying. I know there aren't these voices in the traditional winver but I think this one should correct lacks of the original one.

What do you think about it? Thanks for the gorgeous project.