Pending 4.15.1 release

[TimSchofield]

You are probably right about it not being too big a deal. The release script uses

msgmerge -U -N --backup=off --no-wrap

and I seem to remember a discussion about this being wrong, but I may be misremembering.

I put this gettext stuff in the release script originally to bring the .po files up to date for each release. As Rafael is doing that anyway is there any need to keep it in now?

Tim