Log Message:
Update to 0.92.

New features since 0.9.91:

* Memorize previously selected go-to service.
* Better scale when zoomed close in and in miles distance mode.
* Add and use preference for height units.
* Add and use preference for speed units.
* Add and use preference for distance units.
* Use a preference to set the tiles age.
* New preference for default maplayer cache.
* Improve DEM-Layer.
* Remove OpenAerial support.

Fixes since 0.9.91:

* Fix: Correctly rotate thumbnail images
* Fix #2958601: Support for non ascii characters in "Go-to" search
* Fix error handling in go-to feature