cartesDeCom package renamed to model
sample folder moved to user.home directory
current sample files removed
Major improvements

 - before creating a card, the app checks that at least one family is
selected in card creation process
 - family creation and card creation and modification is immediately
viewable on the screen
 - the app checks the card's and family's informations, for instance, to
ensure that the cards don't have the same family twice in their
parentFamily list
 - debugger added ; it contains :
 	* A button to Display a list of the already created family objects.
 	* A button to Display a list of the already created card objects.
 	* A button to Empty the saving directory containing the family files
and all of the card files. (family files deletion still does not work)
	* A list of the logged LogRecords. (only display the first ones, need
to be fixed)
 - the language combo box in welcome panel initialized itself with the
current app language
 - some changes in messages
 - New exceptions created in order to ease debug

 - bug fixed in card creation : the preview panel did not update on
resize frame moves.
 - bug fixed in family and card saving and loading : there were many
error during the saving and loading process