XWIKI-9516: Create a new Wiki API that replaces xwiki-platform-wiki-manager and xwiki-platform-workspace.

* Minor fix.
Merge pull request #202 from gdelhumeau/master

XWIKI-9516: Create a new Wiki API that replaces xwiki-platform-wiki-mana...
XWIKI-9176: New XWiki Syntax Guide

   * avoid duplicated ids that make the HTMLValidatior tests fail
XWIKI-9529: Introduce input Confluence XML component for WikiStream
* fix nullpointer when the package does not contain any user
Merge pull request #203 from ClemensRobbenhaar/XWIKI-9176-c

XWIKI-9176: New XWiki Syntax Guide - fix tests