Pressing 'ESC' should be same effect as discard changes

Currently if you load a window (such as "edit") and press Escape on your keyboard it will vanish the window but the main page is still grayed out and cannot be clicked.  You have to refresh to regain usage of the main page.

Humbly suggest that alternatively, pressing Escape should have the same effect as clicking "Discard Changes" and return the user to the main page with full use of it
