dirty commit
new StackedDict implementation
new StackedDict implementation + some tests
web.ask() for testing + tests fixes
tests fixes for filters and some Reverse
insanities.templates.Template.render_to() updated
WebHandler.as_wsgi() method + cleaning
tests updated
New web.List behavior + tests (need UML)
Renamed classes

StackedDict -> VersionedStorage
StackedDict._something_new -> VersionedStorage._modified
List (old Map) -> cases
IRI test passed !!!
initial tests for Reverse
Broken Reverse

Added tests that shows broken Reverse for
nested things with web.prefix and web.subdomain.
We need new interface for Tracer.
Introduced interface of locations

Every WebHandler has method _locations() which
returns dict of locations.
Class Tracer and method trace are history
URL class based on str

No more str(URL('/path')) !
fix for namespace filter
Paginator updates
templates package fixes
fixes