[i18n] Italian translations for Horde and some modules

[Massimo Malabotta]

Good morning,
here at University of Trieste we have been using Horde for quite some 
time, now we just upgraded from version 3 to 4 (with some unfortunate 
incidents I have to say...), but most notably the Italian translations 
were just not satisfying at all (from my point of view, not usable...), 
so I have revised most of them.

Unfortunately the .po files I created sum up to 500+K, so I cannot post 
them here; I did not easily find useful informations on how to send them 
to the project (many "translations" documentation pages simply do not 
exist): please tell me how to send you these files.

Please note that this is just the first, biggest, wave of corrections 
(all terms appear now translated), but there will surely be some 
adjustments, which of course I will notify you.

Thanks
Massimo Malabotta