Address some points raised in review

* the i18n data attributes should really be used for localisation,
  they're now Italian (thanks @edujackedu!)
* the official component is called 'password input' rather than
  'password field'. I've changed this around in the guide but
  left the actual code as #govuk_password_field so it's consistent
  with Rails' other form helpers
* renamed the example attributes from PIN and secret code to password_1,
  password_2, password_3. They need to be unique and not encourage
  people to use this component for things other than passwords

guide/content/form-elements/password.slim → guide/content/form-elements/password-input.slim

@@ -1,5 +1,5 @@
 ---
-title: Password fields
+title: Password input
 ---
 
 markdown:
@@ -8,17 +8,17 @@ markdown:
   Use this component whenever you need users to create or enter a password.
 
 == render('/partials/example.*',
-  caption: 'A default password field',
+  caption: 'A default password input',
   code: default_password)
 
 == render('/partials/example.*',
-  caption: 'A password field with a custom label, caption and hint',
+  caption: 'A password input with a custom label, caption and hint',
   code: password_with_a_captioned_heading_label_and_hint) do
   markdown:
-    The password field's title, caption and hint can be customised in the usual way.
+    The password input's title, caption and hint can be customised in the usual way.
 
 == render('/partials/example.*',
-  caption: 'Password field with custom text',
+  caption: 'Password input with custom text',
   code: password_with_custom_text) do
   markdown:
     The component's text can be customised or localised by providing the following arguments:

guide/lib/examples/password.rb

@@ -2,29 +2,29 @@ module Examples
   module Password
     def default_password
       <<~PASSWORD
-        = f.govuk_password_field :password, label: { text: "Enter your password" }
+        = f.govuk_password_field :password_1, label: { text: "Password" }
       PASSWORD
     end
 
     def password_with_a_captioned_heading_label_and_hint
       <<~PASSWORD
-        = f.govuk_password_field(:pin,
-            label: { text: "Enter your PIN", tag: "h2", size: "l" },
+        = f.govuk_password_field(:password_2,
+            label: { text: "Password", tag: "h2", size: "l" },
             caption: { text: "Security", size: "m" },
             hint: { text: "Your PIN was emailed to you when you registered for this service" })
       PASSWORD
     end
 
     def password_with_custom_text
       <<~PASSWORD
-        = f.govuk_password_field(:secret_code,
-            label: { text: "Enter your secret code" },
-            show_password_text: "Display",
-            hide_password_text: "Conceal",
-            show_password_aria_label_text: "Display the secret code",
-            hide_password_aria_label_text: "Conceal the secret code",
-            password_shown_announcement_text: "The secret code has been displayed",
-            password_hidden_announcement_text: "The secret code has been concealed")
+        = f.govuk_password_field(:password_3,
+            label: { text: "Password", tag: "h2", size: "l" },
+            show_password_text: "Mostra",
+            hide_password_text: "Nascondi",
+            show_password_aria_label_text: "Mostra la password",
+            hide_password_aria_label_text: "Nascondi la password",
+            password_shown_announcement_text: "La password è visibile",
+            password_hidden_announcement_text: "La password non è visibile")
       PASSWORD
     end
   end

guide/lib/helpers/link_helpers.rb

@@ -24,7 +24,7 @@ def navigation_links
           "Checkboxes" => "/form-elements/checkboxes/",
           "Date input" => "/form-elements/date-input/",
           "File upload" => "/form-elements/file-upload/",
-          "Password fields" => "/form-elements/password/",
+          "Password input" => "/form-elements/password-input/",
           "Radios" => "/form-elements/radios/",
           "Select" => "/form-elements/select/",
           "Submit button" => "/form-elements/submit/",

guide/lib/helpers/person.rb

@@ -16,9 +16,9 @@ class Person
 
   # password examples
   attr_accessor(
-    :password,
-    :pin,
-    :secret_code
+    :password_1,
+    :password_2,
+    :password_3
   )
 
   # width examples