Moved special __parent__ behaviour up to the browserview class, so all classes inheriting from it, gain this special behavior.

browserDefault implementations that were returning object_thats_not_self, ()
didnt' work.

towards OFS.Traversable and OFS.Application. Name them so.

Introduce a more generic implementation that's very very close to the Zope 3
one and works on objects that don't inherit from OFS.Traversable or support
acquisition (e.g. views, resources, etc.)

of the loop here.

parent (by using the aq_inner() and aq_parent() functions, not the attributes).

Use new module level aq_inContextOf method, so this works for non-wrappers as well. Still needs to be made aware of __parent__ pointers