Fixed Italian è vs é; better .gitignore for macOS

[agbaroni]

The 3rd person of Italian "essere" (= to be) verb is è, not é. It's a serious error.

[rust-highfive]

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[alexcrichton]

Thanks!

[agbaroni]

@alexcrichton I'm reviewing the Italian translation and I saw that ALL accents are wrong. Now, I have a partial patch made with sed covering only è / é characters (I can apply same procedure on other characters); but may be I could accidentally changed some characters in the links to other languages (for example Brazillian). Reviewing word by word would be an hell .... :-(

How can I proceed? I make a pull request and the translators of other languages will review the links?
Thank you.

[alexcrichton]

cc @gabibbo97, thoughts? (you did the original translation)

[gabibbo97]

@alexcrichton Yup, he is right, using the US International keyboard made me swap the correct accent over each "e" with an accent.
I think we can safely replace every wrong accent with a well structured find & replace operation in any editor

[alexcrichton]

Ok, thanks @gabibbo97! Want to make a PR @ituxbag?

[gabibbo97]

@ituxbag Sorry for my mistake, you are 100% correct

Reviewing word by word would be an hell

Yup but if you really need any help I'd gladly mentor you

[agbaroni]

@alexcrichton @gabibbo97 I made the PR #723.