Thanks to @JoshData for the following:
- Adds a setting to not log every request, which makes this easier to use on a high-load site
- Use Python's cProfile class to profile all method calls in a request (with a setting to turn it on)
- Adds a management command to clear the request/response/etc. tables
- Doesn't compute a reverse or load the configuration on every request
- Adds some indexes to the models
- On the SQL queries page, display the query start time as relative to the request start time