v2.1.0

Fix these bugs :

Fix #74 : Names for Package and Factory in src are not named correctly in some cases
Fix #75 : Extended generic types not well generated
Fix #72 : The factory override extension is not generated
Fix #65 : Manage properly the target platform for photon
Fix #70 : In 2.0.0 the generated factory code becomes useless or could be simplified
Fix #71 : Name computation methods already defined in genModel classes