Strip redundant logging config from tutorial INI files.

Leave it for the 'logging' and 'scaffolds' sections, where it is germane.
Verify that wrapped is not None

If wrapped is None we raise a ValueError to let the user know that we
are unable to continue.
Update CHANGES for wsgiapp and wsgiapp2
Remove repeated word.

Remove repeated `use` word.
Improving `X-Vhm-Root` paragraphs.

Improving text of `X-Vhm-Root` paragraphs in `Other Backwards Incompatibilities` section.
Merge pull request #1320 from bertjwregeer/feature.raise_valueerror_wsgi

Feature: raise ValueError if wrapped is None in wsgiapp/wsgiapp2
remove redundant tests
Typo found in second Declarative code block

There were two import statements for Configurator.
I removed the second import statement in the "__main__" since most of the
documentation declares all imports on the top of the source.

	modified:   configuration.rst
Merge pull request #1323 from bmess/narrative_typo

Typo found in second Declarative code block
Merge pull request #1321 from omidraha/patch-1

Improving `X-Vhm-Root` paragraphs.
The copyright symbol causes this error:

UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 2559: ordinal not in range(128)
Replaced non-ascii copyright character with HTML equivalent.
Replaced five minutes with one hour
Update static.py
Merge pull request #1327 from invisibleroads/patch-1

Replaced five minutes with one hour
require ISession.invalidate to leave behind a usable session
fix #1253
- spelling
Merge pull request #1330 from stevepiercy/master

- spelling
- add cookbook to intersphinx mapping