Merge remote-tracking branch 'upstream/gh-pages' into m-297

Conflicts:
	_includes/docs_contents.html
	_includes/docs_contents_mobile.html
	docs/dev/DBFRead.md
	docs/dev/DBFWrite.md
	docs/dev/GPXRead.md
	docs/dev/GeoJsonRead.md
	docs/dev/GeoJsonWrite.md
	docs/dev/KMLWrite.md
	docs/dev/SHPRead.md
	docs/dev/SHPWrite.md
	docs/dev/ST_AsGeoJson.md
	docs/dev/ST_AsKml.md
	docs/dev/h2drivers/DBF.md
	docs/dev/h2drivers/list-drivers.md

See #297.