removed property manager wrapper and exposed property manager directly

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1131 fdac6126-5c0c-442c-9429-916003d36597
exposed mesh properties

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1132 fdac6126-5c0c-442c-9429-916003d36597
exposed functions to copy properties

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1133 fdac6126-5c0c-442c-9429-916003d36597
exposed assign_connectivity function

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1134 fdac6126-5c0c-442c-9429-916003d36597
updated documentation and removed unnecessary functions

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1135 fdac6126-5c0c-442c-9429-916003d36597