Since it's a single "%s, " that was added to the string for email providers,
I've update every single english string and all of their translations by
hand. This will save us losing those translations (otherwise they'd all
fallback to English!), but Transifex and the automation scripts are probably
going to get mad at me that I updated the strings myself. Fuck Transifex.

 * THANKS to Random_R.

 * UPDATE Italian (it) gettext file.
   Thanks to Francesca Ciceri.
 * ADD Welsh (cy) translations.
   Thanks to huwwaters and littlegreykida.
 * ADD Slovak (sk) translations.
   Thanks to Michelozzo and Svistwarrior273.

There was a newly-added escaped double quote without a corresponding,
escaped pair, followed by a newline, i.e.: `\"\n` in the Thai
translation which didn't seem to mess up the template parser nor the
browsers I tested it in, but it did add an unnecessary double quote on
the page so I removed it.