Create Event: POST /event
{ title, date, location } -> { [values], shortlink, id }

Update Event: PUT /event
{ title, date, location }

Create User: POST /participant
{ name } -> { name, id }

Join Event: POST /event/:eventid/participants/:userid

Create Dish for Event: POST /event/:eventid/dishes
{ name?, locked[bool, whether private], creator[userid] } -> { [values], id }

Update Dish: PUT /dish/:dishid
{ name, locked }

Add Ingredient to Dish: POST /dish/:dishid/ingredients
{ title } -> ??? // TODO

Update Ingredient: PUT /ingredient/:ingredientid
{ title, weight, providedBy[userid] }