title: ng-action does not add action attribute in the form
body: <p>I want to have dynamic action attribute in the form. I have a code </p>
  
  <pre><code> &lt;form ng-action="/users/{{user.id}}"&gt;
   &lt;/form&gt;
  </code></pre>
  
  <p>Angular does replaces <code>{{user.id}}</code> with the actual value, but it does not add <code>action</code> attribute with the new value. How do i fix this?</p>
  
  <p>I also tried with </p>
  
  <pre><code>&lt;form action="/users/{{user.id}}"&gt;&lt;/form&gt;
  </code></pre>
  
  <p>It does working in Angular <code>1.2.1</code>, but not in higher version <code>(&gt;1.2.1)</code></p>
  
  <ol>
  <li>JSFiddle with angular version <code>1.2.1</code>, <a href="http://jsfiddle.net/fizerkhan/s8uCT/5/">http://jsfiddle.net/fizerkhan/s8uCT/5/</a></li>
  <li>JSFiddle with angular version <code>1.2.2</code>, <a href="http://jsfiddle.net/fizerkhan/s8uCT/6/">http://jsfiddle.net/fizerkhan/s8uCT/6/</a></li>
  </ol>
  
  <p>I also tried with angular version <code>1.2.4</code>, <code>1.2.6</code>, it does not work.</p>