Because the first pot update automatically generates translations for
the English locales from the source, en@shaw and en_GB get automatically
populated with msgstrs identical to their respective msgids. As far as I
understand from the discussions around the inclusion of WoV, this is
expected behaviour for en_GB, but undesirable for en@shaw (different
language script), so I've manually blanked out the latter in this
commit.
(Allowing CI builds for this one to ensure translations can be built
before merging the PR.)
This creates an empty template catalogue so SCons will generate the
template catalogue and the translation catalogues on a subsequent
pot-update (if there isn't a pot file at all SCons won't attempt to do
anything with the textdomain at all).
[ci skip]
