fix typo

This implementation allows detection of empty values that are non-nullable, allowing the field to return None values for such cases

remove comma

"@api_view" usage error.

Add missing migration file for #3887

Remove page information in pagination error messages

We remove a couple of informations to lower the exposition of our internals.

Use pandoc to generate a nice PyPI information page.

Remove version string from admin template

Remove version string from base template

Fixes vertical html layout for BooleanField

`HTMLFormRenderer` renders `BooleanField` field as not checked if vertical layout are used.

Displayed warnings during test suite.

Silenced deprecation warnings on Django 1.8.

Use 'password123' as password for new users in the tutorial

Trying to create a new user on Django 1.9.x with the password 'password'
will fail with the error message 'This password is too common.'. Because
of that it is necessary to change the used password from 'password' to
'password123'.

Fixes docstrings in fields.py