Changed standard_html_header, standard_html_footer, and standard_error_message to use new DTML syntax.

<dtml-var zope_quick_start>

instead of the old, inaccurate and hard-to-edit "Welcome to Zope" page

Added __len__ method of sequence_variables class for processing of len inside cDocumentTemplate len function when they're pushed on the stack.

Changed manage_access to work properly, and converted RoleManager's manage_access to use DTMLFile instead of HTMLFile.

dependency.

cvs.zope.org repository.

protected attributes can really hold a __roles__ list. Also, subclasses
often want to set up different protection for inherited attributes, in
which case either a copy of the DTMLFile is needed or the roles have to
be stored separately.