Add #displayFullString to have an equivalent of #mooseName also usefu…

[jecisc]

…l for associations

[NicolasAnquetil]

Not sure I got it.
What's wrong with mooseName ? Why duplicate it ?

[jecisc]

We have #mooseName returning the name of the entity and the containment but for associations it returns #noname.
We have #displayString returning the name without the containment, and prints the source and target for associations but it does not print the containment.

In FamixDiff result we want to see the containment because when you have 10 #readObject method you need to find easily in which class/package they are. And you want a nice display for associations also. (This is feedback from Imen)

So I cannot use either of those two methods. I discussed with Clotilde and Anne. I first proposed to change the moose name of associations to print sources and target but Anne do not think this is right. So the solution we chose is to introduce a new variation of the printing method