replaced "gente" with "utenti" to be more precise;
In paragraph svn.preface.howread changed everything from second person to third person plus style changes;
In paragraph svn.preface.conventions fixed title capitalization and a couple of translations
In paragraph svn.preface.icons translated title and minor changes;
In paragraph svn.preface.organization replaced 'guida per un inizo rapido' with 'guida rapida', fixed use of english
terms instead of their translation, and style enhancements;
Translation choices enhancing italian style and correctness until the end of chapter.
Minor style changes