Returns a generator iterating over the each file in :attr:`ContentFiles` relative to :attr:`ProjectHome` directory.

def ContentFilesRelative(self):
        """
        Returns a generator iterating over the each file in :attr:`ContentFiles` relative to :attr:`ProjectHome` directory.
        """
        return (os.path.relpath(path, self.ProjectHome) for path in sorted(self.ContentFiles, key=self.lower))