title: Polymer paper-input and form submission
body: <p>I'm working on a forum theme and started using web components but the form elements don't work.</p>
  
  <p>I have stuff like this:</p>
  
  <pre><code>&lt;input type="text" name="subject" maxlength="85" value="{$subject}" tabindex="1" /&gt;
  </code></pre>
  
  <p>and I tried translating it like that</p>
  
  <pre><code>&lt;paper-input floatinglabel="" label="{$lang-&gt;thread_subject}" type="text" name="subject" maxlength="85" value="{$subject}" tabindex="1"&gt;&lt;/paper-input&gt;
  </code></pre>
  
  <p>and all kind of variations also nesting the  element inside but it doesn't work. </p>
  
  <p>Same goes for all other input elements like submit buttons, checkboxes etc.</p>