fix a bug in inclusion and forward declaration, some bugs in network inclusion and add Server and Client to this simulation class
Merge branch 'master' of https://github.com/ProjetM1MPRI2013/central
Merge branch 'master' of https://github.com/ProjetM1MPRI2013/central
Merge branch 'master' of https://github.com/ProjetM1MPRI2013/central