Added new items to the menu on-the-fly.

1. Click on the dropdown triangle next to  Add and select  Item group.
2. Double-click to select an item group.
3. A new line with an empty name field will appear in the menu card. Enter the name of the new item.
4. To add the new item to the database as a regular master item, select Create on request and fill in the relevant fields. The item will then also available for selection for other events (Creating an item)