Merge branch 'master' into jgrpp-beta

# Conflicts:
#	src/lang/chuvash.txt
#	src/lang/czech.txt
#	src/lang/english_AU.txt
#	src/lang/english_US.txt
#	src/lang/german.txt
#	src/lang/japanese.txt
#	src/lang/korean.txt
#	src/lang/latvian.txt
#	src/lang/russian.txt
#	src/tree_gui.cpp
#	src/vehicle.cpp

src/script/api/script_marine.hpp

@@ -36,6 +36,8 @@ public:
 		BT_DOCK,  ///< Build a dock
 		BT_DEPOT, ///< Build a ship depot
 		BT_BUOY,  ///< Build a buoy
+		BT_LOCK,  ///< Build a lock
+		BT_CANAL, ///< Build a canal
 	};
 
 	/**