Returns a list of all templates that can be used for CMS pages.
        The paths that are returned are relative to TURRENTINE_TEMPLATE_ROOT.

def get_template_options():
        """
        Returns a list of all templates that can be used for CMS pages.
        The paths that are returned are relative to TURRENTINE_TEMPLATE_ROOT.
        """
        template_root = turrentine_settings.TURRENTINE_TEMPLATE_ROOT
        turrentine_dir = turrentine_settings.TURRENTINE_TEMPLATE_SUBDIR
        output = []
        for root, dirs, files in os.walk(turrentine_dir):
            for file_name in files: 
                full_path = os.path.join(root, file_name)
                relative_path = os.path.relpath(full_path, template_root)
                output.append(relative_path)
        return output