Add password reset functionality

### What is the problem / feature ?

There was no way to reset your password if you forgot it.

### How did it get fixed / implemented ?

Implemented the views provided by `django-authtools` for password reset.

### How can someone test / see it ?

Go to `/accounts/password-reset/` and follow the password reset flow.

*Here is a cute baby animal picture for your troubles...*

![Uploading 29364-Fawn-Pug-pup-8-weeks-old-and-sooty-colourpoint-rabbit-white-background.jpg . . .]()