removed copyright headers from files that would be generated for users of doctest.
(script.js, htmlStyle.css)
Merge branch 'master' into feature-no-copyright-headers-in-generated-files

Conflicts:
	src/site/markdown/CHANGES.md
Bump to site plugin version 3.3 (compatible with Maven 3.1)
Added description how to customize doctest with own layout
Description "how to customize" for site plugin.
Modified a comment in ftl that would show up on generated html files otherwise.