Design "Express mode" for Pisa

[alicerunsonfedora]

With recent changes in Sayo-nika/koizumi, it seems more plausible if we offer developers a way to make an "Express mode" for Setup.

Proposal

We create a new Setup assistant mode (Express mode) that's easily configurable in a few ways:

• Only display game's disclaimer at start and incorporate Setup elements elsewhere
• Shorten steps in a single screen
• "Use express settings" mode (agree and automatically recommended settings like in Windows 8+)