Support short abstract

[seyfeb]

Is your feature request related to a problem? Please describe.
Make additional information available on the overview page. Examples:

name: "Ciabatta", "abstract:  "Pure sour dough bread"
name: "Tomato Soup",   abstract:  "Original italian style"
name: "Roastbeef",   abstract:  "Cross on the outside, juicy on the inside"

Describe the solution you'd like
CreativeWork items like Recipe support an abstract field. This could be used to add a small amount of information in addition to the recipe's title to add a little more context. The abstract/subtitle/.. could, e.g., be displayed on the recipes overview page with, next to, instead of the creation and modification date (does anyone "use" the dates anyway? 😄). One could also think of showing the info in an overlay on hover (on desktop) and use a different style for mobile devices.

Edit: Just found the disambiguatingDescription property. This might be even better suited.

[christianlupus]

This might be part of #1244.