Inline forms do not render correctly for models with custom primary keys
|Reported by:||David Gouldin||Owned by:||nobody|
|Has patch:||yes||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
When using a model with a custom primary key as an inline in the admin, the primary key field is rendered twice and tabular's field count is off by one.