Added the username to the revision log, and displayed both that and the stamp in the str version.
Note: we want to save the username rather than referencing the user directly, because the user object might disappear over time, but we want to keep the log entry intact.
Added a couple of ConInfoString  entries, for logos for the con, for use on PDF generation and other outputs.
Also, the initial data didn't appear to include the permissions, which is strange.