Allow Web controls to fill the remaining browser height

Allow Web controls such as ListBox, Chart and Canvas to fill the remaining height of the browser window and automatically grow or shrink when the window is resized.

Developers should be able to keep headings, navigation and other controls above the main content, then let that content use the available space below. This should work alongside the existing responsive width layouts, with sensible minimum sizes and usable scrolling when the browser is too short.