Merge remote-tracking branch 'origin/Kevin' into Antoine
popopooooooooooo

PPOOOOO
patch
Merge remote-tracking branch 'origin/Antoine' into Kevin
double compilation is now working
Merge remote-tracking branch 'origin/Antoine' into Kevin
Merge remote-tracking branch 'origin/Kevin' into Antoine
patch positions
Merge remote-tracking branch 'origin/Antoine' into Kevin
upgrade Scene

new functions freeposition, findfreeposition