Text reflow documentation

[Slion]

Text reflow feature can be tested there: https://docs.oracle.com/javase/7/docs/api/java/net/URL.html

Basically is helps make a classic fixed desktop web site more readeable and fuild on mobile devices.

Document that feature in the wiki maybe? If I recall well it works by injecting some JavaScript or modifying the CSS or both. It could be made a tab option.