Merge branch 'master' into jgrpp

# Conflicts:
#	src/airport_gui.cpp
#	src/build_vehicle_gui.cpp
#	src/direction_type.h
#	src/gfx_type.h
#	src/group_gui.cpp
#	src/misc_gui.cpp
#	src/rail_gui.cpp
#	src/road_gui.cpp
#	src/signs_gui.cpp
#	src/slope_func.h
#	src/smallmap_gui.cpp
#	src/terraform_gui.cpp
#	src/toolbar_gui.cpp
#	src/town_gui.cpp
#	src/town_type.h
#	src/vehicle_type.h
#	src/widget_type.h

src/townname.cpp

@@ -497,7 +497,7 @@ static void MakeFinnishTownName(StringBuilder builder, uint32_t seed)
 		if (view.find_first_of("aouAOU") != std::string_view::npos) {
 			builder += "la";
 		} else {
-			builder += u8"l\u00e4";
+			builder += "l\u00e4";
 		}
 		return;
 	}