Background

Currently, the AppBar on mobile does not work and does not match our purposes.

Proposal

The AppBar will have 5 buttons:

[ ] Home: takes user to the homepage at / where user can search for houses
[ ] Whishlist: takes user to /whishlist, future problem
[ ] Language: Change the app locale (maybe by opening up a popover or a modal, future problem)
[ ] Account / Login: Depends on the auth state, Account takes user to /account, Login opens the login modal
[ ] Logout / Register: Depends on the auth state, Logout opens a modal and asks the user to confirm (since on mobile, it's easy to tap Logout by mistake), Register opens the register modal