Italian .po: fixed encoding of accented letters

[Gelma]

Hi everybody,
and thanks a lot for your work!

I have fixed the encoding of italian translation file.

Thanks,
Andrea

[danielhjames]

Thanks Andrea! This will have to be checked against the Transifex resource to make sure your corrections are not overwritten by a git push from there.

[Gelma]

Hi Daniel, the same file has also a lot of wrong/bad translations. If you prefer, I could fix it in another way (by Transifex or whatever).

[danielhjames]

Thanks! Please join the Airtime translation project here: https://www.transifex.com/signup/?join_project=airtime and let me know if you need any help.