Print card

Modified the function printCard from cli.c. Now the card has the red framework if this card can't be put down, yellow framework if this card is selected and white framework if this card not is selected but he can be put down.
Modified the declaration of functionCard. Removed the parameter 'position' because now this parameter is useless and added the parameter 'allow' which indicate if this card can be put down or no. 
Added the documentation for this parameter.
Added in the module main.c a new color more precisely the white color which is used in printCard().