Updating site to use USWDS styles (#509)

* Updated header and footer
* Updated fonts
* Moved files around and updated gulpfile to correct the build process when it goes to production
* Adjusted grid templating
* Added images to assets
* Update app/templates/components/uk_components/footer/template.njk

Co-authored-by: Steven Reilly <stvnrlly@users.noreply.github.com>

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

@@ -11,11 +11,11 @@
 
     {{ page_header('Billing details') }}
 
-    <p class="govuk-body">
+    <p>
       You can use the information on this page to add the Cabinet Office as a supplier. Your organization may need to do this before you can raise a purchase order (PO).
     </p>
 
-    <p class="govuk-body">
+    <p>
       <a class="govuk-link govuk-link--no-visited-state" href="{{ url_for('main.support') }}">Contact us</a> if you need any other details.
     </p>
 
@@ -23,18 +23,18 @@
       Supplier details
     </h2>
 
-    <p class="govuk-body">
+    <p>
       Cabinet Office
     </p>
 
-    <p class="govuk-body">
+    <p>
       The White Chapel Building <br>
       10 Whitechapel High Street <br>
       London <br>
       E1 8QS
     </p>
 
-    <h3 class="heading-small" id="email-addresses">
+    <h3 class="font-body-lg" id="email-addresses">
       Email addresses
     </h3>
 
@@ -46,7 +46,7 @@
       {% endfor %}
     </ul>
 
-    <h3 class="heading-small" id="vat-number">
+    <h3 class="font-body-lg" id="vat-number">
       <abbr title="Value Added Tax">VAT</abbr> number
     </h3>
 
@@ -61,7 +61,7 @@
       Bank details
     </h2>
 
-    <p class="govuk-body">
+    <p>
       National Westminster Bank PLC (part of RBS group) <br>
       Government Banking Services Branch <br>
       2nd Floor <br>
@@ -70,15 +70,15 @@
       EC2M 4RB
     </p>
 
-    <h3 class="heading-small" id="account-name">
+    <h3 class="font-body-lg" id="account-name">
       Account name
     </h3>
 
-    <p class="govuk-body">
+    <p>
       Cabinet Office
     </p>
 
-    <h3 class="heading-small" id="account-number">
+    <h3 class="font-body-lg" id="account-number">
       Account number
     </h3>
 
@@ -89,7 +89,7 @@
       ) }}
     </div>
 
-    <h3 class="heading-small" id="sort-code">
+    <h3 class="font-body-lg" id="sort-code">
       Sort code
     </h3>
 
@@ -101,7 +101,7 @@
     </div>
 
 
-    <h3 class="heading-small" id="iban">
+    <h3 class="font-body-lg" id="iban">
       <abbr title="International Bank Account Number">IBAN</abbr>
     </h3>
     <div class="govuk-!-margin-bottom-4">
@@ -111,7 +111,7 @@
       ) }}
     </div>
 
-    <h3 class="heading-small" id="swift-code">
+    <h3 class="font-body-lg" id="swift-code">
       Swift code
     </h3>
 
@@ -126,7 +126,7 @@
       Invoice address
     </h2>
 
-    <p class="govuk-body">
+    <p>
       SSCL – Accounts Receivable <br>
       PO Box 221 <br>
       Thornton-Cleveleys <br>