[Plone-i18n] Kupu translations

[Duncan B. <dun...@su...>]

I've been tidying up the .pot files for kupu, and it has been suggested 
that I should add kupu's translation files to the PloneTranslations product 
so that people don't need access to codespeak when maintaining the .po 
files.

Accordingly I've moved Kupu's .pot and .po files into 
PloneTranslations/trunk/i18n/kupu and Kupu now uses svn:externals to 
populate its own i18n directory. I'm not sure if that is the best location: 
if not then someone please suggest a better location and I'll move them.

As part of the tidy up, I split the existing 2 i18n domains into 3.

 "kupu" contains the translatable strings used as part of the normal kupu 
usage (mostly Plone but it includes some used only for other versions of 
kupu).

 "kupuconfig" contains translatable strings used by Kupu's Plone 
configuration screens.

 "kupupox" (the new domain) contains translatable strings used in 
Javascript: these are not currently used in Plone at all (most of them you 
will never see, and those which can occur do not get translated in Plone).