Enhancement
(User-visible)
Dialogs should be able to be closed (as an option) not only via the "x" button, but simply by clicking on the background.
Implementation
The tl:MainLayout has been given a configuration option closeDialogOnBackgroundClick which can be used to control whether dialogs with a "Close" button can be closed by clicking on the background.
Test
Open dialog with "Close" button and close it by clicking into the background. Dialogs without a "Close" button should not offer this functionality.