XE-476: Convert Syntax page to XWiki Syntax 2.0
XE-476: Convert Syntax page to XWiki Syntax 2.0

Merged from 2.0 branch (rev 23576)

git-svn-id: cf27bad30c6b7316185bdac65b014e8c16cd40b6@23593 f329d543-caf0-0310-9063-dda96c69346f

xwiki/xwiki-enterprise,xwiki/xwiki-enterprise