WIP: Patch background map style to remove its housenumbers

[tuukka]

No description provided.

[github-actions]

https://5f3fdb746acb21a5d626a09d--boring-ramanujan-de6e24.netlify.app has the deployment for the merge commit 5edb49838188ab239a1f095a6607af54cea2f261 corresponding to the pull request HEAD commit db93db17b089f3bb482c7fa60b205af99e2b540b.

[github-actions]

The Lighthouse report for the draft URL: https://storage.googleapis.com/lighthouse-infrastructure.appspot.com/reports/1598021122039-29236.report.html

The Lighthouse report for the production URL: https://storage.googleapis.com/lighthouse-infrastructure.appspot.com/reports/1598021122502-64719.report.html

The links might expire after the next 7 days. GitHub Actions workflow artifacts contain more reports that might expire later.

[github-actions]

Draft URL Time to Interactive (TTI) values are 10413, 14745, 15012, 15261, 15414, 15624, 15654, 15803, 16001, 16465, 16498, 16579, 17081, 17247, 18793 ms.

Production URL Time to Interactive (TTI) values are 16544, 16558, 16661, 16756, 16952, 17271, 17336, 17347, 17394, 17538, 17948, 17996, 18505, 18667, 18681 ms.

The change of median value was -8.9 %. Possibly statistically insignificant yay!