RFC: Reachability: UX for first setup wizard and apps

Hello,

Here is a proposal for reachability user experience for first setup wizard and apps. Some salient points:

• Explanations for the problems where they can't be eliminated. Presentation of solutions with strengths and limitations.
• Hierarchial presentation of solutions to the user to hide unnecessary complexity.
• Comprehensive presentation all available solutions.
• Completely functional FreedomBox at the end of the first wizard. Checks for setup steps are done while running the wizard instead of presenting error status later.
• Simpler ways for performing current operations such as auto registration for Dynamic DNS.
• Ability to skip and restart wizards later.
• Improvements to all apps' UI to deal with reachability problems.
• Improvements to reachability related configuration in system section.
• Scope for providing automatic recommendations and automatic discovery of current state.

Update: Posted version 2 with some feedback incorporated and more work