Facilitated care of links (pictures) in readme for the future.

Based on the experience of my own GitHub projects, I believe that it is easier to update "links" and "images" into "ReadMe"s (written in markdown) when they are bundled at the end of the document.

Lighty bootup emits information messages about timimg based on conversion to milliseconds. This is not always appropriate, as some things are at seconds-scale.
Unify all time tracking around Guava's Stopwatch, which performs automatic conversion, such that the timings are human-readable down to microseconds.

Text and Images in NetBeans documentation uses JavaFX12 text to represent JavaFX library. The same is shown in the images.

This should be generalized and JavaFX or JavaFX SDK should be used instead. The images should be updated as well.