fix: last seen timestamp and removing useless echo

src/app/chat/event_handling.nim

@@ -12,7 +12,6 @@ proc handleChatEvents(self: ChatController) =
     let evArgs = MsgsLoadedArgs(e)
     self.view.pushMessages(evArgs.messages)
     for statusUpdate in evArgs.statusUpdates:
-      echo "updating member visibility", $statusUpdate
       self.view.communities.updateMemberVisibility(statusUpdate)    
       
   # Display emoji reactions

ui/app/AppLayouts/Chat/ChatColumn/User.qml

@@ -82,7 +82,6 @@ Item {
             radius: 20
             color: {
                 let lastSeenMinutesAgo = (currentTime/1000 - parseInt(lastSeen)) / 60
-                
                 if (!chatsModel.isOnline) {
                     return Style.current.darkGrey 
                 }

ui/app/AppLayouts/Chat/ChatColumn/UserList.qml

@@ -66,7 +66,7 @@ Item {
             publicKey: model.publicKey
             name: model.userName
             identicon: model.identicon
-            lastSeen: model.lastSeen
+            lastSeen: model.lastSeen / 1000
             currentTime: root.currentTime
         }
     }