implemented getJs in subsetmapping 

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@10510 b7f1a160-662a-0410-a6d8-bea165342f16
FIX: header files now appear in IDE

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@10511 b7f1a160-662a-0410-a6d8-bea165342f16