Increase the notes polling timeout over time
What does this MR do?
A file called notes is loaded every ~15 seconds which checks for updates to content on the page. This commit increases the polling timeout over time (15, 30, 60, 120 seconds) and resets it to 15 seconds if the AJAX call returns new notes
What are the relevant issue numbers?
Issue #13300 (closed)
cc: @jschatz1