Removed the deprecated ``five:containerEvents`` directive, which had been a no-op for quite a while.

Removed Products.Five.fivedirectives.IBridgeDirective - a leftover from the Interface to zope.interface bridging code.

Marked the ``<five:implements />`` as officially deprecated. The standard ``<class />`` directive allows the same.

Turns out zope.cachedescriptors was only a test dependency of formlib, which we don't care about anymore.

 * mention plone.recipe.zope2instance, which is more convenient for people
   starting from scratch

 * correct the name of the mistyped 'log' subdir.

 * more explicitly mention that the zope.conf excerpt provided here is just
   that: an excerpt, and not a complete minimalistic zope.conf.

Use new zope.traversing, which allows us to get rid of zope.password, zope.principalregistry and zope.securitypolicy.

systems.

Sorry for my brain eclipse cluttering your checkin lists.

Is ITracebackSupplement fully implemented somewhere ?

- removed redundant SimpleTreeMaker import