Documentation on Field's 'description' class attribute does not mention that it will be interpolated with field.__dict__

[abeld]

The "Documenting your Custom Field" section in the "Writing custom
model fields" page
(​http://docs.djangoproject.com/en/1.2/howto/custom-model-fields/) does
not mention that this string will be string-interpolated with
fields.dict (in the get_readable_field_data_type() function in
django.contrib.admindocs.views ) and thus can (and should, if
appropriate, since it really increases the usability of the admin
docs) contain stuff like %(some_attribute)s, and the example presented
doesn't show this feature, either.

[Aymeric Augustin]

Change UI/UX from NULL to False.

[Aymeric Augustin]

Change Easy pickings from NULL to False.

[Tim Graham <timograham@…>]

In 2d96e660f9fb5cbc16de74f29d66daee6d8eaa44:

Fixed #14006 -- Documented that Field's 'description' attribute is interpolated with field.dict

Thanks abeld for the suggestion.

[Tim Graham <timograham@…>]

In a22b2aea192e8722aa3004c9e50e728438a453cd:

[1.6.x] Fixed #14006 -- Documented that Field's 'description' attribute is interpolated with field.dict

Thanks abeld for the suggestion.

Backport of 2d96e660f9 from master.

[Tim Graham <timograham@…>]

In 80673e20f212fbefd1a8d53ae521e95c6eedf201:

[1.5.x] Fixed #14006 -- Documented that Field's 'description' attribute is interpolated with field.dict

Thanks abeld for the suggestion.

Backport of 2d96e660f9 from master.