Add definition PUT, that would create/update models

[leplatrem]

Add definition PUT, that would create/update models

[Natim]

This? https://github.com/spiral-project/daybed/blob/master/daybed/views/models.py#L182-L198

[leplatrem]

Nope, on /model/<modelid>/definition, with the definition only in body

[Natim]

I am not sure we want this because we are already giving the definition only on the /model/<model_id> endpoint: http://daybed.readthedocs.org/en/latest/usage.html#model-management

[leplatrem]

But the permissions set required is different, that's one of the reasons we should allow definition PUT.
(e.g. I can have read_definition and update_definition, but not delete_model ... )