Welsh: update from Pootle
Templates: update to refresh locations
Update scripts and configs to produce good templates
Templates: update

* Better location comments
* Scrub messages so msgstr's are empty
Afrikaans: mostly reflow location comments
Only update source when updating templates/
Afrikaans: unfuzzy duplicated strings
Welsh: update from Pootle
Welsh: update against templates
Welsh: remove obsolete file
Welsh: recover various files