Set the default interactive example to be the first interactive in first group.

IS [#43494053]
import default and custom MD2D element colors

[#39694413]

Atoms now have the same colors as they do in Java MW.
Do not use global variables (Lab) in code based on RequireJS (!)

That is not very clean and causes problems in node.js environment.
lab.config.js is generated as RequireJS module exactly to avoid these
issues.
So, it should be required:
  labConfig = require('lab.config');
and later:
  labConfig.actualRoot
instead of:
  Lab.config.actualRoot
Remove ACTUAL_ROOT setup for tests env, as it is unnecessary now
custom element color is light-blue, not turqoise

[#39694413]
don't add multiple copies of images to MD2D view

[#43963115]
Change reset --hard #{branch} to origin/#{branch} in deploy.rb
Oil and Water setup for testing per tuning

[#44344753]
easier scrolling: increase code-editor left margin
display MD2D model time as nano-seconds

[#44398429]
display MD2D model time as pico-seconds

[#44398429]

pico-seconds, not nano-seconds!
remove unused older version of NL data-export module

[#44401867]
NL JSON export: add timeStamp to runSeries

[#44401867]
restore defaults when "slow computer" when reset

[#44344753]
VISUAL: NetLogo data export examples
also display dataSeries from visual netlogo models
smaller font size, larger area for export
export data updates for airbags v15b and 15c
add airbags v15h
extract data-export netlogo code to external fragment