Update map size when window size changes

[opatut]

There seems to be a problem with the maps, they are not resized correctly when changing the window size. That makes them look rather odd. Please fix that.

[yyxcv]

There seems to be a bug in 'react-map-gl' v.6 that causes the problem.
The only ways to fix the issue with v.6 (that I have come up with) are kind of 'hacky'.

I tested the map with 'react-map-gl' v.7 and the bug does not seem to present there.
I noticed also that the map does not correctly resize if the mapSettings are toggled.

I'm going to look into it and will come up with a pull request...