Change banner content to just cover analytics

Follows discussions with @quis, @yahoopete and
@karlchillmaid.

app/assets/stylesheets/govuk-frontend/extensions.scss

@@ -7,3 +7,13 @@
     column-count: 4;
   }
 }
+
+// Class to extend govuk-button to allow it to sit alongside other inline content
+.govuk-button__inline {
+  vertical-align: top;
+  margin-bottom: 0;
+
+  @include govuk-media-query($from: tablet) {
+    vertical-align: baseline;
+  }
+}