QmlJsEditor: help - extend lookup rules for help

This patch prefers QML.moduleName1.2.Type as index for help.
The old rule is also supported for backwards compatibility.

Change-Id: I484399ac54f6ccb09938ef63e1e5b6845e5e8da5
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/plugins/qmljseditor/qmljshoverhandler.h

@@ -89,6 +89,7 @@ private:
                             const QmlJS::ContextPtr &context);
 
     TextEditor::HelpItem qmlHelpItem(const QmlJS::ScopeChain &lookupContext,
+                                     const QmlJS::Document::Ptr &qmlDocument,
                                      QmlJS::AST::Node *node) const;
 
     QmlJS::ModelManagerInterface *m_modelManager;