Better structure

new class : QuantityDic  (replace old dic)
new class : TextGoal (initialised with the expert goal as for
TextInformation)
better init for TextGoal and TextInformation, takes a object and not
init them (Goal and Representation are object needed for init)
Lot of changes

adapted from modifications of structure (new classes and initialisation
of TextInformation and Goal)
Indentation changed because of liClipse