Person slugs include title PK, not text

[evildmp]

For example:

5-daniele-procida

instead of

mr-daniele-procida

Likely to have been introduced in #68 #70

[darbula]

This should be fixed on this line.

Documentation states prepopulated_fields doesn’t accept DateTimeField, ForeignKey, nor ManyToManyField fields so consider removing title from the slug.

Removing title can be justified because slug is not changing and title could be changing these two could eventually become out of sync, oth name could be changed, also...