CreateCarScreen, ChangePasswordScreen and design fixes
- ChangePasswordScreen designed
- CreateCarScreen designed
- Navigation adjusted
- design fixes to other Screens
**This solves:**
https://gitlab.rlp.net/top/23s/co2/vico2izer/-/issues/136+
https://gitlab.rlp.net/top/23s/co2/vico2izer/-/issues/138+
Edited by Klamroth, David