Implemented phase 6 for the POC prototype in the Website service.

Services/Website/Sources/Library/Internal/Pages/MessagesPage.swift

@@ -332,6 +332,25 @@ private extension MessagesPage {
                     "“\(note)”"
                 }
             }
+            if offer.status == .expired, conversation.side == .buying, offer.listing.isAvailable {
+                p(.class("type-small")) {
+                    "\(conversation.shop.name) didn't answer within 48 hours. The listing is still available at \(offer.listing.priceCents.euros)."
+                }
+                div(.class("answer")) {
+                    a(
+                        .class("button button--primary button--sm"),
+                        .href(.Route.offer(offer.listing.slug))
+                    ) {
+                        "Offer again"
+                    }
+                    a(
+                        .class("button button--sm"),
+                        .href(.Route.buy(offer.listing.slug))
+                    ) {
+                        "Buy at \(offer.listing.priceCents.euros)"
+                    }
+                }
+            }
             if offer.status == .open, conversation.side == .selling {
                 AnswerOffer(
                     offer: offer,