[it] update 01-chapter9.markdown

Reviewed "Impianto e sanitari".
Fixed many typos, reviewed the translation.
[it] 01-chapter9.markdown

Reviewed translation and fixed typos.
Completed "Gli oggetti di Git"
[it] 01-chapter9.markdown

Reviewed translation and fixed typos.
"Oggetti Albero"
test.txt was misspelled as text.txt, as well.
reviewed "Oggetti commit"

Reviewed the translation
Rivisto e corretto l'italiano.
Translated Summary

the translation of the chapter is not yet completed
Merge pull request #586 from daftano/master

[it] update 01-chapter9.markdown
Merge pull request #585 from farevalod/master

[es] Editing and style changes to chapter 1
Completed "Oggetti Commit"
Translation of "Oggetti commit"

Reviewed translation and fixed typos.
Reviewed translation of "Intestazione"

reviewed and fixed typos
Reviewed Tag
Merge pull request #587 from daftano/master

[it] update 01-chapter9.markdown
Reviewed Riferimenti remoti

Reviewed translation.
Update untranslated parts

to match the latest state of source manual
fix typos
Update 01-chapter1.markdown

Translated section "Local Version Control System"
Update README

Removed earlier "translator" from the text.
Merge pull request #589 from miukoba/ja-fix-typos

[ja] fix typos
Merge pull request #588 from daftano/master

[it] update 01-chapter9.markdown
Merge pull request #590 from fenre/patch-1

Update 01-chapter1.markdown