[Koha] Breeding farm => Repository

I'd like to officially change all references to the "breeding farm" to the "repository." For English speakers, I think "repository" is a much more accurate description. So for all (future) docs writers, please use this new terminology. (All the templates, etc., will also need to be changed.) -- Stephen Hedges Skemotah Solutions, USA www.skemotah.com -- shedges@skemotah.com