Research how to make running the tests faster

[HenrikHartiala]

Currently there is a lot waiting time in each tests when running them. We need to wait for the map to load, we need to wait for the app to be downloaded etc.

We should research how to make this faster, check how much the running time is reduced if we do not wait for the map tiles to load (use the CI setup). And maybe check would it be faster to for example build the optimized "production" version of the App and run the test for that or do we lose the won time to the build time.