Brand the webmail INBUXA: name, mark and wordmark

INBUXA is a product suite and ihasmail an independent product, so INBUXA's
webmail says INBUXA: the sign-in page, header, page title, installed-app name
and About page. The wordmark is drawn in the current text color. ihasmail's
version and AGPL source line stay as its credit. Two new strings, in all nine
catalogues; three Stalwart-only ones are no longer used.

web/src/locales/fr.ts

@@ -1220,6 +1220,8 @@ export const catalog: Catalog = {
     "Could not save filters: {error}": "Impossible d’enregistrer les filtres : {error}",
     "Could not send the receipt: {error}": "Impossible d’envoyer l’accusé de lecture : {error}",
     "Could not sign in.": "Connexion impossible.",
+    "About INBUXA webmail": "À propos d’INBUXA webmail",
+    "Mail server": "Serveur de messagerie",
     "You'll enter your password on your mail server's sign-in page.": "Vous saisirez votre mot de passe sur la page de connexion de votre serveur de messagerie.",
     "You'll sign in on your mail server's own page.": "Vous vous connecterez sur la page de votre serveur de messagerie.",
     "This sign-in didn't start in this browser. Try again.": "Cette connexion n’a pas commencé dans ce navigateur. Réessayez.",