- textarea: added attribute "autosave" - set autosave attributes in text_fields, when "multiple_lines" was specified. - remove for the time being "hkey" from "non_cached_instance_var_patterns", since this was recently fixed (TODO: check regression test and reactivate it later) - new Externally callable method: autosave-attribute: this is a simplified version of "save-attributes", but which does NOT perform input validation, which might be a problem in case of partial input - add "autosave-attribute" to all policies, where "save-attributes" was set