modules to pyramid from within an INI file.
These settings will override the previous settings keys but not the keys from the environ.
modified scaffold templates to be xhtml compliant
(usually set up by Paste as part of startup). This means that output from e.g. ``debug_notfound``, ``debug_authorization``, etc. will go to the normal logging channels. The logger name of the debug logger will be the package name of the *caller* of the Configurator's constructor. - If a string is passed as the ``debug_logger`` parameter to a Configurator, that string is considered to be the name of a global Python logger rather than a dotted name to an instance of a logger.