* boards/draw/tool-load.png: remade using an image from openclipart
	* boards/skins/default/directory.png: remade using an image from openclipart
	* boards/skins/default/file.png: remade by bruno
	* src/boards/draw.c: (item_event_move): fixed the rotation
	* src/boards/python/anim.py: removed internal item_rotate_relative. used this code
	to fix the implemetation of item_rotate_relative
	* src/gcompris/gameutil.c: (item_rotate_relative): fixed using the implementation of Yves
	from anim.py