* make preview area of class: text so styles are applied as expected
* fix evaluation of Markup h2/h3 attribute toc=false, so headings are excluded from TOC as expected
* split global.js into its components, so it can be reasonably processed by setup
* make reputation requirements configurable
* move Markup and Locale back into global.js (removed associated build scripts)
* extend Icon to display iconId in lightbox popup