Merge branch 'master' into jgrpp

Remove the viewport sign cache as this is now superseded by the kd tree
implementation

# Conflicts:
#	src/crashlog.cpp
#	src/lang/english.txt
#	src/misc.cpp
#	src/pathfinder/follow_track.hpp
#	src/pbs.cpp
#	src/rail_cmd.cpp
#	src/saveload/vehicle_sl.cpp
#	src/settings.cpp
#	src/settings_gui.cpp
#	src/ship_cmd.cpp
#	src/station.cpp
#	src/station_base.h
#	src/station_cmd.cpp
#	src/table/settings.ini
#	src/thread/thread_morphos.cpp
#	src/town_cmd.cpp
#	src/train_cmd.cpp
#	src/viewport.cpp
#	src/waypoint.cpp

src/economy.cpp

@@ -1076,8 +1076,9 @@ static uint DeliverGoodsToIndustry(const Station *st, CargoID cargo_type, uint n
 
 	uint accepted = 0;
 
-	for (uint i = 0; i < st->industries_near.Length() && num_pieces != 0; i++) {
-		Industry *ind = st->industries_near[i];
+	for (Industry *ind : st->industries_near) {
+		if (num_pieces == 0) break;
+
 		if (ind->index == source) continue;
 
 		uint cargo_index;