Make wiki page existence more visible
Problem to solve
The Wiki link in the sidebar appears whether there are any existing Wiki pages or not, so it's not obvious from a project overview whether it has any associated wiki pages.
We're a research group at a university and have a number of projects to demonstrate to staff and students aspects of software engineering, guides to various tools, and example workflows. Sometimes these are accompanied by a Wiki page to give some additional background, links to papers, style guides, etc, but not all the time. Given that each project always has a wiki link in the sidebar and it looks the same whether there are actually pages there or not, it's easy to miss useful documentation.
Change the colour of the wiki icon in the sidebar if there are existing pages, and perhaps put the number of existing pages after it in brackets (2). Alternatively, an extra icon to the left of each project in the group details listing would lead directly to the wiki page and provide an overview of available pages.