Automatically derive location coordinates from address

[timobrembeck]

Short description

Automatically derive location coordinates from address

Proposed changes

• Add geopy for Nominatim API client
• Automatically derive location coordinates from address
• Show warning when manual coordinates are too far away from Nominatim API result
• Make coordinates optional for locations not on map

Resolved issues

Fixes (partially): #1000
Fixes: #1180

[codeclimate]

Code Climate has analyzed commit 61ccfe1 and detected 3 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	3

The test coverage on the diff in this pull request is 51.9% (50% is the threshold).

This pull request will bring the total coverage in the repository to 73.9% (0.0% change).

View more on Code Climate.

[ulliholtgrave]

Thank you very much. I tried it and everything seems to work just as expected 👍
Just one small issue: Could you add some initial debug message that the Normatim API is available/used? So something similar like the GVZ and DeepL API?

[ulliholtgrave]

Thanks for adding this API check 👍 I guess this is good to go, if the pylint issues are adressed 🎉