Transparent .rvt handler not spoofed by / (index.rvt) URLs.
Add /fix/ URL
Link to admin page if user is an admin.
Generic database record viewer.
Link to record viewer from users page.
Generic statistics and some helper links to other admin tools.
Helper procs to sanitize user input.
Only log tracebacks if it's a normal user.
Don't log tracebacks if they're displayed to user.
Now there's actually a useful /admin/ toolset.