build: Don't use an intermediate .pot file to do translations

Declare to be translatable directly, without
extracting translatable strings from a .pot which we then translate,
which we then need to merge into translations.

Files in its/ from Robert Ancell <>
1 job for wip/hadess/really-gettext in 4 minutes and 53 seconds (queued for 21 seconds)
Status Job ID Name Coverage
passed #588202