title: Django reset auto-increment pk/id field for production
body: <p>(I'm new to Django, Python, and Postgresql) I've been adding and deleting data in my development and noticed that the pk keeps adding up and never reset to 1 even if I delete all the models. Is it possible to reset the pk to start from 1 before I push this up to the production? Is it a good idea to do that?</p>