* boards/boardicons/melody.png: new better icon by jose
	* boards/sounds/en/colors/gcompris_colors_en.assetml.in: fixed the location of orange.ogg
	* boards/sounds/en/colors/orange.ogg: added here: fixed the location of this file
	* boards/sounds/en/geography/gcompris_geography_en.assetml.in: fixed the location of orange.ogg
	* boards/sounds/en/geography/orange.ogg: deleted here: fixed the location of this file
	* boards/sounds/melody/melody.ogg: added by Jose
	* src/boards/maze.c: (start_board): fixed image icon name
	* src/boards/python/melody.py: fixed timer management and crash
	* boards/click_on_letter.xml.in: replaced speaker by mouth icon in help comment