🎩 User Story

Comes from #289. We need to choose an OSM provider to implement reverse geocoding and showing a map with all the meetings of a process.

📋 Related documentation

http://decidim-design.herokuapp.com/phase1_meetings/
http://decidim-design.herokuapp.com/meetings/
http://decidim-design.herokuapp.com/meeting-view/

🎯 Acceptance criteria

• When managing a meeting, the address it automatically geocoded and we store its coordinates in the meeting
• When listing meetings, I can see them in a map
• When showing a single meeting, a map with the meeting address displayed as a static image with a link to the full map.