Merge master into release

Merge updated translations

Merge GH-1793 (KMZ ground overlay support)

Merge GH-1761 (translations)

Merge master into release

ProjSetup: Reset Android cache on Mapper change

It is not enough to rely on the presence of PROJ resource file names
in the cache directory: The contents of resources (esp. proj.db) may
change over time. It is also better to get rid of obsolete files.

OcdFileImport: Fix iwyu warning

Merge updated translations

Merge GH-1621 (Set reference point correctly)

Merge GH-1568 (GDAL template handling)

Improve GDAL template handling