Add an image to a recipe

[haschi]

You can add an image to a recipe in the edit dialog. The image is displayed:

• In dialogue
• In the recipe detail view.

error message if:

• The image is in an unknown format (not png or jpg)
• The image exceeds the maximum size.

demarcation:

• The image is not yet displayed in the list view of the table of contents.
• The image will later appear in the card when the recipes are displayed as cards in the table of contents.
• The image will not be cropped. It must be uploaded in the correct aspect ratio.
• There is no function yet to delete the image

Implementation:

The image is first saved in the database. Whether the image will later be stored in a CDN has to be decided when such a component is added to nubes.