Clean up UI

[RizzeKnight]

See also https://office.ethberlin.ooo/pad/#/3/pad/edit/ecd4b5f7d264a6cd8087ea96a0db8100/, 'Design' section!

Do not forget Mark and/or Mentor/s.

[RizzeKnight]

• Show current context i.e. location
• Add degrees to location indicatror
• Replace 'message/s' with 'post/s'
• Add buttons 'refresh location' // 'manually (and maybe an explainer under 'i' / 'Help' or so)

@tomyo