Change header to include strapline
Change header to include strapline

gds-attic/transactions-explorer,alphagov/transactions-explorer,alphagov/transactions-explorer,gds-attic/transactions-explorer,gds-attic/transactions-explorer,alphagov/transactions-explorer,alphagov/transactions-explorer,gds-attic/transactions-explorer,alphagov/transactions-explorer,gds-attic/transactions-explorer