properly mark messages as read when not in inbox

core/src/main/groovy/com/muwire/core/messenger/Messenger.groovy

@@ -145,7 +145,7 @@ class Messenger {
     
     synchronized void onUIMessageReadEvent(UIMessageReadEvent e) {
         diskIO.execute({
-            File unread = new File(folders.get(INBOX), deriveUnread(e.message))
+            File unread = new File(folders.get(e.folder), deriveUnread(e.message))
             unread.delete()
         })
     }

core/src/main/groovy/com/muwire/core/messenger/UIMessageReadEvent.groovy

@@ -4,4 +4,5 @@ import com.muwire.core.Event
 
 class UIMessageReadEvent extends Event {
     MWMessage message
+    String folder
 }

gui/griffon-app/controllers/com/muwire/gui/MessageFolderController.groovy

@@ -120,7 +120,7 @@ class MessageFolderController {
     void markMessageRead(MWMessageStatus status) {
         if (status.status) {
             status.status = false
-            model.core.eventBus.publish(new UIMessageReadEvent(message : status.message))
+            model.core.eventBus.publish(new UIMessageReadEvent(message : status.message, folder: model.name))
         }
     }
 }