docs(credit): add Édouard Lopez to credit
docs(links): add links to the 'DataPages' sample extension
docs(install): update installation instructions
docs(desc): update description, add 'History' section
style(clean): remove useless line
docs(usage): add sample code to test extension and screenshot
refactor(namespace): change NS to 282 so it follows 'EmbedScript'

It seems logical to get a NS close to related extension.
see: https://www.mediawiki.org/wiki/Extension_default_namespaces#EmbedScript
Merge commit 'refs/changes/95/152095/3' of ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/Limn into review/152095

Conflicts:
	Limn.php
	README.md
	includes/LimnContentHandler.php
Fix:
	d3.geo.projection.js
fix(limnContent): correct path to 'JCContentView'
docs(toc): update organization
docs(requirement): link to 'JsonConfig' and give minimal version
docs(style): minor tweak, section levels
Revert "refactor(namespace): change NS to 282 so it follows 'EmbedScript'"

This reverts commit 032ca14e24a3e32dc67126ca420698928e63fee2.
fix(min): let wiki minify resources
recactor(perms): chmod g=rwx, chgrp www-data
Merge branch 'review/152095': improve documentation

Conflicts:
	Limn.php