If I need, want to drop my database and start over, what is involved or how do I apply the migrations? I don't want to start over from scratch installing the whole cookiecutter.
Make a backup of your entire project. Make sure, to make a backup of the virtual environment as well! Go through your apps and delete all files in the 'migrations' folder but the 'init.py' files.
Now here is an often overlooked and kinda clumsy part: Go to your virtual environment. Under /lib/pythonx.x/site-packages/allauth/migrations/ delete the migration files, leave the init.py file. Same is for /lib/pythonx.x/site-packages/socialaccount/migrations/
Then just do as you would with a new project i.e. createdatabase createsuperuser makemigrations
That should be it!