R1:21ba07d5bdc9

Provide wiki pages for projects

Summary:
Provide tighter integration between Projects and Phriction. Partly, I have most
of a rewrite for the Projects homepage ready but it's not currently possible to
publish feed stories about a project so all the feeds are empty/boring. This
partly makes them more useful and partly just provides a tool integration point.

- When you create a project, all the wiki pages in projects/<project_name>/*
are associated with it.
- Publish updates to those pages as being…