fix for enable all popups not working

also popup notification is no longer a singleton

indra/llui/llnotifications.h

@@ -458,6 +458,13 @@ public:
 		return mRespondedTo;
 	}
 
+	bool isActive() const
+	{
+		return !isRespondedTo()
+			&& !isCancelled()
+			&& !isExpired();
+	}
+
 	const LLSD& getResponse() { return mResponse; }
 
 	bool isIgnored() const

indra/newview/llmediactrl.cpp

@@ -920,14 +920,10 @@ void LLMediaCtrl::draw()
 	if ( mBorder && mBorder->getVisible() )
 		mBorder->setKeyboardFocusHighlight( gFocusMgr.childHasKeyboardFocus( this ) );
 
-	if (mCurNotification)
+	if (mCurNotification && !mCurNotification->isActive())
 	{
-		if (mCurNotification->isCancelled() || mCurNotification->isExpired())
-		{
-			hideNotification();
-		}
+		hideNotification();
 	}
-
 	
 	LLPanel::draw();
 

indra/newview/skins/default/xui/en/notifications.xml

@@ -6455,8 +6455,7 @@ Mute everyone?
   name="PopupAttempt"
   icon="Popup_Caution"
   type="browser"
-  duration="10"
-  unique="true">
+  duration="10">
     A pop-up was prevented from opening.
     <form name="form">
       <ignore name="ignore"