If you set the current menu to "undefined" the Eatit session crashes

When fetching via the google-api Sannesgården is currently "undefined" but still shown as an menu. Because of this you can break the Eatit session by setting the broken menu as the current menu.

Start by tracing how menus are fetched from the Google API and how the current menu is selected. Reproduce the crash by selecting the Sannesgården menu when its value is undefined, then verify that the EatIT session remains usable and that an undefined menu is not shown as selectable.

Written by the indexing model from the issue text.