property sheets.

Got rid of a number of obsolete and unused methods.

to support class instance method editing hijinks.

disabling index_html.

Changed the "add and edit" redirect to quote the id.  This is needed
to support class instance method editing hijinks.

  reorder(s, [with, without]]) --

     Reorder the items in s according to the order given in with
     and with items mentioned in without removed.  Items from s
     not mentioned in with are removed.

     s, with, and without are all either sequences if strings
     or sequences of key-value tuples, with ordering done on the
     keys.

This function is useful for constructing ordered select lists.

(By moving the indicator from OFS/main.dtml to here.

Added support for the optional variable 'manage_tabs_message',
which can be used to include status messages. This somewhat experimental
feature is provided in hopes of doing away with message dialogs.

Changed the way that highlighting is done in tabs to account
for the fact that view actions may now be paths, rather than just
method names.

Changed meta_types definition to use actual class meta-types.

meta-type.

from performing some operations.  This is primarily to prevent
access to management operations on instance methods accessed through
an instance, rather than through a class.

when it is used on a "method".  When used on a method, it manages
the mapping from components permissions to whole (instance) permissions.

is a permission setting whos value is a string giving the name of
an alternate permission.

abstract response API a litte more complete.

to deal with multiple propstat elements, though the spec seems to say
that they allowed.

objects to prevent acquiring it.

__name__ if there *is* a "." in the name.  (Products passed in
directly don't have one, f'rinstance.)

content types.

per [WebDAV 5.2].