Redesign UI for Mobile Devices

[wp99cp]

With #181, we intentionally broke the UI for mobile devices, as they are not our primary target users. Nevertheless, we should redesign the mobile UI and build it properly in the future.

[wp99cp]

I'm currently in the process of developing a new mobile user interface and I would like to share two screenshots with you. The Swisstopo App inspires the design and I would appreciate any feedback you may have.

Known Issues

• Cannot scroll down
• Resizing is not intuitive, and should be improved
• steps should be horizontal to better utilize the limited space

[wp99cp]

@carlobeltrame, the new UI is implemented. I will merge and release it after some final tests.

Feel free to open new Issues if you detect any problems with the new UI...