change key warning to be persistent, so I dont miss what it said

files.py

@@ -683,7 +683,7 @@ def view(id):
             msg += "Clearing out all states.  This means browser back buttons will not work, please start a new tab and try again"
             PA_UserState.query.delete()
             db.session.commit()
-        SetFELog( msg, "warning" )
+        SetFELog( msg, "warning", persistent=True, cant_close=False )
         return redirect("/")
     else:
         NMO_data = FaceOverrideType.query.all()