* Added SMTP page & nav translations (includes SMTP on texts)
Changed from mail.* to smtp.* (thanks @dcsjapan)
Added _label to labels (thanks again)
* Making translations with better quality
(comment from @b9a10a1)
* Changed SMTP to Email, some minor changes, organization, some headings, refs...
* Updated ...SMTP page... comment to ...email page...
* updated translation keys to alphabetically, \& added quotes around email_text (thanks @maelsoucaze)
* Wow, so many extra spaces... I don't know when I added them :(
* Changed "adresses" to "addresses"