title: Eclipse: Project cannot reference itself
body: <p>I am not able to add <code>Dynamic Web Module 3.0</code> facet due to this error. No idea what is wrong with my project settings. <br/>This is a <a href="https://stackoverflow.com/questions/1928277/eclipse-problem-project-references-itself">duplicate</a> question but accepted answer provides a url as solution which no longer work. </p>