fixed a merge error
added better styling for now learn, if you want to know more sections
added open nodes and leaves to the jstree theme
fixed the quoting of string when checking them with matchers in Json. fixes #310

Conflicts:
	common/src/main/scala/org/specs2/json/Json.scala
added h3 ribbons to user guide pages
fixed the printing of html links relative to the out dir
better opening of main nodes in the toc
fixed failing specifications