Fix message ordering

Signal/src/Loki/LokiGroupChatPoller.swift

@@ -111,7 +111,7 @@ public final class LokiGroupChatPoller : NSObject {
         }
         // Poll
         let _ = LokiGroupChatAPI.getMessages(for: group.serverID, on: group.server).done(on: .main) { messages in
-            messages.reversed().forEach { message in
+            messages.forEach { message in
                 if message.hexEncodedPublicKey != userHexEncodedPublicKey {
                     processIncomingMessage(message)
                 } else {

SignalServiceKit/src/Loki/API/LokiGroupChatAPI.swift

@@ -162,7 +162,7 @@ public final class LokiGroupChatAPI : NSObject {
                     quote = nil
                 }
                 return LokiGroupMessage(serverID: serverID, hexEncodedPublicKey: hexEncodedPublicKey, displayName: displayName, body: body, type: publicChatMessageType, timestamp: timestamp, quote: quote)
-            }
+            }.sorted { $0.timestamp < $1.timestamp }
         }
     }