Menu management

[yourwebmaker]

It should be possible to possible to manage items on the menu. Items will have:

• name/description,
• price,
• photo,
• is "preferable" or not,
• alergy warnings (lactose, seafood, gluten)

It should be possible to disable items from the menu. E.g. Kitchen runs out of flour, so we can't prepare pizza anymore?

When an item is disabled, we need to disable this item in all the clients.