Create and Update don't work with non-numeric and/or primary keys

When a resource uses a primary key that is non numeric (knex converts the string into 0 for the promise's resolution).

To help with this, if the id is being passed in with the attrs, then use that instead of the promise's results.

Also, in postgresql you need to pass the id column's name in with the insert to have the `ids` array be populated.
