RFC: UI Mockups

This Request For Comments is about the User Interface of the module. At this stage we mainly need quick mockups (wireframes) of the different views.

At a minimum, we need:
- Public List View
- Public Detail View (for each extension)
- Administration of the module (probably need a couple views here, for administrators that need to be able to edit everything)
- An edit view for the maintainers of each extension (we may need a list/detail here if a maintainer maintains multiple extensions)
- A github grid view to replace the excel spreadsheet I have been using for the core modules. This needs advanced filtering and sorting but does not need to be good looking or responsive, just basically an automated spreadsheet to help me (and anyone else needing this) to quickly tirage issues and pull requests. For instance filtering for just the core modules that have open issues without tags. Or finding the oldest pull request that has the bug tag, etc.

If anyone has ideas, or want to submit some wireframes, please comment/attach here.