Document string for Translators

[leonardo-lemos]

As Translators need to blindly translate strings, some translators aren't understanding the meaning of the string below and it's singular form. We need to document it in the POT file and make it in our Weblate,

https://github.com/elementary/switchboard-plug-security-privacy/blob/acc01f444cdc10ef62cd54da4d265ae36a12f52f/src/Views/FirewallPanel.vala#L238

[tintou]

:/ and this should use ngettext for proper translation support

[yarons]

Any news?

[fitojb]

I looked at the source code briefly but still don’t understand what goes in each placeholder. As a general rule, please write proper English sentences instead of relying on many placeholders to concatenate it programmatically; some languages like Slovenian use grammatical case, making this problem even worse. @elementary