HOTFIX: Adjustment To Product Editor Not Saving After 10+ Min. Idle

In Chrome, when you make an edit to a product and then leave the
computer idle for 10+ minutes, Chrome sends a blank form back. The
system would provide an error about a drop down field providing an empty
value.
Because this should only happen when the form is submitted blank, which
should not happen in the case of a drop down, I adjusted the message
shown to instruct the user that the changes were not made and to refresh
the page in the browser to make the changes.