[RP] Use data from Geoportal

[SimonMand]

Some changes from the original impl:

Number of schools is a bit less:
Rheinland-pfalz: 1653
Rheinland-pfalz (new way): 1629

Some parameters per school are missing:
website
provider
fax

Runtime is significantly faster. Instead on ~30 seconds, now it's ~2 seconds

Fixes #193

[k-nut]

Hm, I somehow seem to have forgotten that we did have a way for getting geo data for RP already when I created #193. I'm not sure if this is worth the change now that I see the difference. It's nice since the code is a bit simpler but I'd argue that we are actually only losing information right now without much added benefit. What do you think @SimonMand? (code changes themselves look good 👍)

[SimonMand]

What do you think @SimonMand? (code changes themselves look good 👍)

I totally agree with you. The HTML flow gives us more information and same coordinates. So I would stick with what we have.
I will close this PR as it is obsolete now. And will prepare a new PR to update the table (from NO -> YES)

[k-nut]

That sounds like a good plan. Thank you!

[SimonMand]

The PR was closed, because it's offering less data and for locations then we already have them from the original HTML api.

[k-nut]

For future reference, I've updated our table in 1953db0