Ability to add new content when using relationship widget

[snide]

This is farther out but listing it here.

When using a relationship widget we should allow people to type in a brand new object and click "Add X as a new X" in the relationship search. Doing so would create a new object with that name (it would disregard the need for needing the other fields, even if validation says we need it). This way you could create objects really quickly as you were filling in forms.

[mcat]

It would be handy if a user could be presented with the related content's form inline where the relationship is being created. This would be similar to the functionality provided in Django admin

See the "Fridges" and "Microwaves" sections in this screenshot for an example of how an inline relationship could work.