Add translations for recovery key view

app/views/settings/security/recovery_keys.haml

@@ -5,19 +5,19 @@
         .card-body
           .d-none.d-print-block.totp-setup__recovery-icon
             %i.fa.fa-comments
-          %h1.totp-setup__recovery-title Your Retrospring recovery codes
+          %h1.totp-setup__recovery-title= t(".heading", app_name: APP_CONFIG['site_name'])
 
           %ul.totp-setup__recovery-codes
             - @recovery_keys.each do |key|
               %li
                 %code= key.code
-          .d-none.d-print-block These codes were generated #{Time.now.strftime('%F at %T %Z')}
+          .d-none.d-print-block= t(".generated_at", time: l(Time.now))
         .card-footer.d-print-none
-          We recommend storing these in a password manager or printing them out on paper.
+          = t(".recommendation")
           %br
-          %a.btn{ onclick: 'print()' }
+          %a.btn{ onclick: "print()" }
             %i.fa.fa-print
-            Print
+            = t(".print")
         .d-none.d-print-block.text-success
           %i.fa.fa-tree
-          Please consider the environment before printing this page.
+          = t(".consideration")