Merge branch 'polyline_track_tool' into jgrpp

# Conflicts:
#	src/rail_cmd.cpp
#	src/rail_gui.cpp
#	src/viewport.cpp
#	src/viewport_func.h

src/misc.cpp

@@ -121,6 +121,7 @@ void InitializeGame(uint size_x, uint size_y, bool reset_date, bool reset_settin
 	InitializeEconomy();
 
 	ResetObjectToPlace();
+	ResetRailPlacementSnapping();
 
 	GamelogReset();
 	GamelogStartAction(GLAT_START);