No warning after editing textbox and not saving.

Note to tester: This change is related to MDL-31655 and MDL-31660 . To aid your testing, you may want to test all three together. These instructions are additive Log in to Moodle and navigate to a course Choose Edit Settings Without any changes Refresh the page (the page refreshes) Hit the back button (you go back in time and space) Go back to the Edit Settings Page Try closing the browser window (it closes) Reopen, Click Save and Display (the form saves) Now make some changes to various fields Go back to the Edit Settings Page Make a change to the 'Course full name' - do not move off the field Refresh the page (you get a popup) - click to stay Hit the back button (you get a popup) - click to stay Try closing the browser window/tab (you get a popup) - click to stay Click Save and Display (the form saves)