M8: add operational authentication mode

frontend/src/i18n/locales/en-GB/auth.json

@@ -19,5 +19,9 @@
   "roleOperationsManager": "Operations manager",
   "roleRentalEmployee": "Rental employee",
   "switchRole": "Switch role",
-  "logout": "Log out"
+  "logout": "Log out",
+  "emailLabel": "Email address",
+  "passwordLabel": "Password",
+  "signIn": "Sign in",
+  "passwordLoginFailed": "Sign-in failed. Check your credentials."
 }

frontend/src/i18n/locales/fr-BE/auth.json

@@ -19,5 +19,9 @@
   "roleOperationsManager": "Responsable des opérations",
   "roleRentalEmployee": "Collaborateur de location",
   "switchRole": "Changer de rôle",
-  "logout": "Déconnexion"
+  "logout": "Déconnexion",
+  "emailLabel": "Adresse e-mail",
+  "passwordLabel": "Mot de passe",
+  "signIn": "Se connecter",
+  "passwordLoginFailed": "Connexion impossible. Vérifiez vos identifiants."
 }

frontend/src/i18n/locales/nl-BE/auth.json

@@ -19,5 +19,9 @@
   "roleOperationsManager": "Operationsmanager",
   "roleRentalEmployee": "Verhuurmedewerker",
   "switchRole": "Wissel van rol",
-  "logout": "Uitloggen"
+  "logout": "Uitloggen",
+  "emailLabel": "E-mailadres",
+  "passwordLabel": "Wachtwoord",
+  "signIn": "Aanmelden",
+  "passwordLoginFailed": "Aanmelden mislukt. Controleer je gegevens."
 }