TEMP: customise devise.failure.unconfirmed values

This commit customises Devise's default value for the key `devise.failure.unconfirmed`. The value adds a link to the email confirmation page.
Note: The values for this key in both the `...en-CA.yml` and `...fr-CA.yml` files were provided solely by me and need to be approved/finalised by The Alliance

config/locales/translation.en-CA.yml

@@ -228,7 +228,9 @@ en-CA:
       not_found_in_database: Invalid email or password.
       timeout: Your session expired, please sign in again to continue.
       unauthenticated: You need to sign in or sign up before continuing.
-      unconfirmed: You have to confirm your account before continuing.
+      unconfirmed: |
+        You have to confirm your account before continuing.
+        <a href="/users/confirmation/new" class="a-orange">(Click to request a new confirmation email)</a>
       invited: You have a pending invitation, accept it to finish creating your account.
     mailer:
       confirmation_instructions:

config/locales/translation.fr-CA.yml

@@ -242,7 +242,9 @@ fr-CA:
       not_found_in_database: Courriel ou mot de passe incorrect.
       timeout: Votre session est expirée. Veuillez vous reconnecter pour continuer.
       unauthenticated: Vous devez vous connecter ou vous inscrire pour continuer.
-      unconfirmed: Vous devez confirmer votre compte pour continuer.
+      unconfirmed: |
+        Vous devez confirmer votre compte pour continuer.
+        <a href="/users/confirmation/new" class="a-orange">(Cliquez pour demander un nouvel e-mail de confirmation)</a>
       invited: Vous avez une invitation en attente. Acceptez-la pour terminer la création
         de votre compte.
     mailer: