make it possible to run with DEBUG=False

[crucialfelix]

this would be useful in general, to run devserver with --debug=False

but in particular its quite important for checking memory leaks. I see memory increasing on each page load and I'm pretty certain that is the size of the queries being saved. its the same amount for the same exact queries. different queries, different but consistent amount.

or so it seems ... I'm not sure ! thus I want to run with debug=False

would also be very useful in day to day use without having to open up the settings file to switch