Add support for openstreetmap

[kittykat]

I'm submitting a ... (check one with "x")

• bug report
• feature request
• support request => Please do not submit support requests here, instead ask your query in out Gitter channel at https://gitter.im/fossasia/open-event-orga-server

Current behavior:
Maps are shown using Google Maps

Expected behavior:
Maps are shown using OpenStreetMap

Steps to reproduce:

1. Go to https://eventyay.com/e/de88e486/

2. Look at "Getting there" information

3. Observe a Google map rather than an OSM map

Other information:
Google maps provides propitiatory maps which cannot be fixed or updated. OSM provides FOSS compatible maps which can be fixed by anyone and are also better in some parts of the world (e.g. in India).

System information:
https://eventyay.com/

[shubham-padia]

@open-event-bot move to fossasia/open-event-frontend

[open-event-bot]

Hi @kittykat!

I've moved your issue to the correct repository.
Please make sure to keep an eye on the new issue for the latest information.