WIKI-566 [Jboss] Error when selecting Link, Image, Macro in add wiki at rich text mode

Fix description: Using userID instead of sessionID to store shared data in org.exoplatform.wiki.service.impl.SessionManager
WIKI-380 : Open link in a new window doesn't work
Fix description: Call method XWiki.fixLinksTargetAttribute() of Xwiki to fix all links with purpose opeing in new window
Merge commit '0f394d8c308c5e5317a3737d7ff30c9c482b4e32' into HEAD