Show device-specific help texts when geolocation fails

[mikaelsvensson]

Visa instruktioner för hur man aktiverar GPS. Dessa ska kunna anpassar utifrån enhetens operativsystem.

Lästips:

• https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent
• https://dev.to/konyu/using-javascript-to-determine-whether-the-client-is-ios-or-android-4i1j
• https://developer.mozilla.org/en-US/docs/Web/API/Navigator/platform
• https://github.com/topics/os-detection?l=javascript&o=desc&s=stars
• https://www.npmjs.com/package/platform
• https://www.howtogeek.com/783414/how-to-check-which-websites-can-access-your-location-in-safari/
• https://goquickride.com/troubleshooting-location-services-iphone-and-ipad/
• https://www.guidingtech.com/top-ways-to-fix-location-services-not-working-on-android/
• https://www.guidingtech.com/top-ways-to-fix-location-services-not-working-on-iphone/