Making suggestion

WIP
1) Suggestion is created but with the wrong id, has incrementing parent id (fixture-0, fixture-1, etc) instead of its own (100, 101, etc).
2) Error is thrown in the console:
`Uncaught Error: Assertion Failed: You can only add a 'initiative' record to this relationship`
3) template does not display saved suggestion (probably because of 2)).
`div.suggestions` doesn't seem like the right generated field class, I'd inspect the field manually to see what's the correct one. Also, check out the other tests to see how they're detecting form fields