title: Removing all empty p-Tags
body: <p>i need your help with an regex in Javascript, again.</p>
  
  <p>Sometimes i have empty p-Tags in the DOM and i will remove them all.</p>
  
  <p>Some look like: </p>
  
  <pre><code>&lt;p&gt;&lt;/p&gt;
  </code></pre>
  
  <p>others like: </p>
  
  <pre><code>&lt;p&gt; &lt;/p&gt;
  </code></pre>
  
  <p>I think for an regex pro is this very lame, but i'm not good with it :( </p>
  
  <p>so thanks in advance :) </p>