Implement map with active and inactive chapters

[gsambrotta]

Implement a map where user can see all the OTS chapters.
Chapters are shown on the map as marker on the city of the chapter.
This page location is /community/chapters

Specs:

1. Show active/inactive chapters as markers
2. each marker should link to chapter page
3. Map has to be responsive.
4. Be sure user can easily navigate on the map without the mouse is being captured and user get stack in zoom in/zoom out
5. On Mobile we should see just a list of active chapter (no map is loaded at all)

Marker data:
check into _chapters/chapter-name.md
each file should have config line: active: boolean
Check that each chapter has one, if not add it.
Write active: true for active chapter and active: false for inactive chapter.
Marker design:

• blue if the chapter is active
• grey if the chapter is inactive