An Italian glossary was also added. Some changes:
* commit (verb): (creare una) nuova revisione
* commit (noun): revisione
* checkout: attivazione
* tracking branch: duplicato locale di ramo remoto
* repository: archivio
* some terms are used with more consistency
Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
