add new billing details page

contains both signed in and signed out versions (when signed in you can
see bank details etc)

app/templates/admin_template.html

@@ -225,6 +225,10 @@
           {
             "href": url_for("main.how_to_pay"),
             "text": "How to pay"
+          },
+          {
+            "href": url_for("main.billing_details"),
+            "text": "Billing details"
           }
         ]
       },

app/templates/views/pricing/billing-details-signed-out.html

@@ -0,0 +1,26 @@
+{% extends "content_template.html" %}
+{% from "components/page-header.html" import page_header %}
+
+{% block per_page_title %}
+  Billing details
+{% endblock %}
+
+{% block content_column_content %}
+
+    {{ page_header('Billing details') }}
+
+    <p class="govuk-body">
+      <a class="govuk-link" href="{{ url_for('.sign_in', next=url_for('.billing_details')) }}">Sign in</a> to see our:
+    </p>
+
+    <ul class="govuk-list govuk-list--bullet">
+      <li>supplier details</li>
+      <li>bank details</li>
+      <li>invoice address</li>
+    </ul>
+
+    <p class="govuk-body">
+      You can use this information to add the Cabinet Office as a supplier. Your organisation may need to do this before you can raise a purchase order.
+    </p>
+
+{% endblock %}

app/templates/views/pricing/billing-details.html

@@ -0,0 +1,128 @@
+{% extends "content_template.html" %}
+{% from "components/page-header.html" import page_header %}
+
+{% from "components/copy-to-clipboard.html" import copy_to_clipboard %}
+
+{% block per_page_title %}
+  Billing details
+{% endblock %}
+
+{% block content_column_content %}
+
+    {{ page_header('Billing details') }}
+
+    <p class="govuk-body">
+      You can use the information on this page to add the Cabinet Office as a supplier. Your organisation may need to do this before you can raise a purchase order (PO).
+    </p>
+
+    <p class="govuk-body">
+      <a class="govuk-link govuk-link--no-visited-state" href="{{ support_link }}">Contact us</a> if you need any other details.
+    </p>
+
+    <h2 class="heading-medium govuk-!-margin-top-7">
+      Supplier details
+    </h2>
+
+    <p class="govuk-body">
+      Cabinet Office
+    </p>
+
+    <p class="govuk-body">
+      The White Chapel Building <br>
+      10 Whitechapel High Street <br>
+      London <br>
+      E1 8QS
+    </p>
+
+    <h3 class="heading-small">
+      Email addresses
+    </h3>
+
+    <ul class="govuk-list govuk-list--bullet">
+      <li>
+        generic@digital.cabinet-office.gov.uk
+      </li>
+      <li>
+        first.last@digital.cabinet-office.gov.uk
+      </li>
+    </ul>
+
+    <h3 class="heading-small">
+      <abbr title="Value Added Tax">VAT</abbr> number
+    </h3>
+
+    <div class="govuk-!-margin-bottom-4">
+    {{ copy_to_clipboard(
+        'GB 88 88 010 80',
+        name=None,
+        thing='<abbr title="Value Added Tax">VAT</abbr> number',
+    ) }}
+    </div>
+
+    <h2 class="heading-medium govuk-!-margin-top-7">
+      Bank details
+    </h2>
+
+    <p class="govuk-body">
+      National Westminster Bank PLC (part of RBS group) <br>
+      Government Banking Services Branch <br>
+      2nd Floor <br>
+      280 Bishopsgate <br>
+      London <br>
+      EC2M 4RB
+    </p>
+
+    <h3 class="heading-small">
+      Account name
+    </h3>
+
+    <p class="govuk-body">
+      Cabinet Office
+    </p>
+
+    <div class="govuk-!-margin-bottom-4">
+    {{ copy_to_clipboard(
+        '98765432',
+        name='Account number',
+        thing='account number',
+      ) }}
+    </div>
+
+    <div class="govuk-!-margin-bottom-4">
+    {{ copy_to_clipboard(
+        '01-23-45',
+        name='Sort code',
+        thing='sort code',
+      ) }}
+    </div>
+
+    <div class="govuk-!-margin-bottom-4">
+    {{ copy_to_clipboard(
+        'GB33BUKB20201555555555',
+        name='IBAN',
+        thing='IBAN',
+      ) }}
+    </div>
+
+    <div class="govuk-!-margin-bottom-4">
+    {{ copy_to_clipboard(
+        'ABCDEF12',
+        name='Swift code',
+        thing='Swift code',
+      ) }}
+    </div>
+
+    <h2 class="heading-medium govuk-!-margin-top-7">
+      Invoice address
+    </h2>
+
+    <p class="govuk-body">
+      SSCL – Accounts Receivable <br>
+      PO Box 221 <br>
+      Thornton-Cleveleys <br>
+      Blackpool <br>
+      Lancashire <br>
+      FY1 9JN
+    </p>
+
+{% endblock %}