This utility is only used from the shell and extracts / merges
MAKETEXT strings into the locale/*.pot and .po files.  It does
not make use of any other Foswiki classes or services.

…to Item14152

* commit '4eef383f3c031dce6d2ccba1af7c5657784fc036':
  Item13897: Revert xgettext to the non-OO version in master

…TML formatting.

Implemented with Moo::Role create_class_with_roles. Foswiki::Config has
been choosen as the first victim.  An example extension class
Foswiki::Extension::Sample::Class overrides its assignGLOB() method and
instead of aliasing %Foswiki::cfg into $Foswiki::app->cfg->data it ties the
global.

This implementation is only an example. The module will later be deleted
from the repository. The real implementation would make sense if we decide
to move the config into a database, for example. In this case direct
references to Foswiki::Config data attribute must be replaced with calls to
get/set/delete/etc. method calls.