Discuss whether the current web app UX should be changed

Should we reimplement the [web app](list.tilman.ninja) 1:1 or should we change some UI or UX?

Are we satisfied with:
- the list selection & management
- Category selection and creation
- Item & unit/amount representation
- user management (currently only name)
- list functionalities (undo, merge, etc.)
- list history (currently at the bottom)

and probably more topics.