Porting activities in Qt version of GCompris.

GCompris is an educational suite, that aims to teach kids, in the easiest way. Here we are not trying to replace the teacher. We are here just to make their work a little easier. And for this, I want to propose three activities. Family activity that will help kids understand how they are related to their relatives. After that I will be working on the port of Submarine simulator and at last I will work on Collision Activity, that will be based on the concept of collision and conservation of momentum.