Merge branch 'save_ext' into jgrpp

# Conflicts:
#	src/lang/english.txt
#	src/lang/german.txt
#	src/lang/korean.txt
#	src/settings.cpp
#	src/station_cmd.cpp
#	src/table/settings.ini
#	src/vehicle_base.h
#	src/widgets/dropdown.cpp

src/town_cmd.cpp

@@ -3199,7 +3199,7 @@ static CommandCost TownActionFundBuildings(Town *t, DoCommandFlag flags)
 		 * Also emulate original behaviour when town was only growing in
 		 * TOWN_GROWTH_TICKS intervals, to make sure that it's not too
 		 * tick-perfect and gives player some time window where he can
-		 * spam funding with the exact same effeciency.
+		 * spam funding with the exact same efficiency.
 		 */
 		t->grow_counter = min(t->grow_counter, 2 * TOWN_GROWTH_TICKS - (t->growth_rate - t->grow_counter) % TOWN_GROWTH_TICKS);