Sync llviewerobjectbackup with Cool VL Viewer

Note to Translators:
-Adds translation work to floater_object_backup.xml
-Adds ImportFailed, ExportAborted, and ConfirmAbortBackup to notifications.xml

Turns LLViewerObjectBackup into an LLFloaterSingleton.. but eventually, this should probably be an instance tracker on the uuid of the object to export or something instead.

indra/newview/llviewerobjectlist.cpp

@@ -272,7 +272,7 @@ void LLViewerObjectList::processUpdateCore(LLViewerObject* objectp,
 	}
 	else
 	{
-		LLObjectBackup::getInstance()->primUpdate(objectp);
+		LLObjectBackup::primUpdate(objectp);
 	}
 	
 
@@ -310,7 +310,7 @@ void LLViewerObjectList::processUpdateCore(LLViewerObject* objectp,
 		gViewerWindow->getWindow()->decBusyCount();
 		gViewerWindow->getWindow()->setCursor( UI_CURSOR_ARROW );
 		
-		LLObjectBackup::getInstance()->newPrim(objectp);		
+		LLObjectBackup::newPrim(objectp);
 	}
 }