QmlJS checks: Suppression of static analysis messages.

* Use '// @disable M123' to suppress
* Add quick fix to add these comments

Change-Id: I499f5a6004148afbb346218c6fb01c9ca77b9f73
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

src/plugins/qmljstools/qmljsrefactoringchanges.h

@@ -63,6 +63,7 @@ public:
 
     bool isCursorOn(QmlJS::AST::UiObjectMember *ast) const;
     bool isCursorOn(QmlJS::AST::UiQualifiedId *ast) const;
+    bool isCursorOn(QmlJS::AST::SourceLocation loc) const;
 
 protected:
     QmlJSRefactoringFile(const QString &fileName, const QSharedPointer<TextEditor::RefactoringChangesData> &data);