Make the scripted dialogs and restart message appear in the top right corner

again. Viewers have been busy making these notifications all into toasts but
we believe there are message that are important enough to make the user
acknowledge them.

OpenSim/Region/CoreModules/Avatar/Dialog/DialogModule.cs

@@ -203,8 +203,8 @@ namespace OpenSim.Region.CoreModules.Avatar.Dialog
         {
             m_scene.ForEachRootClient(delegate(IClientAPI client)
             {
-                client.SendBlueBoxMessage(fromAvatarID, fromAvatarName,
+                client.SendAgentAlertMessage(
-                        message);
+                        message, false);
             });
         }