Disabling Auto Update Feature?

We’'re looking to deploy an openfire/spark setup in our organization shortly. For part of the deployment we customized part of spark (disabled chat history, removed the check for updates link under help, etc) in the code. This week when spark 2.5.1 was released, users were asked if they wanted to upgrade. Where and how would I change the code to prevent spark from looking for an update? I think I found it but want to make sure before we deploy spark only to have users upgrade it next time an update window pops up.

Just a thought, it’'d be nice if there was a checkbox under spark to tell it to check for updates or not.