title: How to put all css files in one file and all javascript files in one file
body: <p>When I want to include any new <code>CSS</code> file or any new <code>JS</code> file, I put it in the header as this</p>
  
  <h1>css file</h1>
  
  <pre><code>&lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/header.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/index.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/footer.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/signup.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/contactUs.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/option.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/question.css"  /&gt;
      &lt;link rel="stylesheet" href="&lt;?php echo URL; ?&gt;public/css/profile.css"  /&gt;
  </code></pre>
  
  <h1>js file</h1>
  
  <pre><code>&lt;script src=&lt;?php echo URL . "public/Js/profile.js" ?&gt;&gt;&lt;/script&gt;
      &lt;script src=&lt;?php echo URL . "public/Js/cell.js" ?&gt;&gt;&lt;/script&gt;
      &lt;script src=&lt;?php echo URL . "public/Js/place.js" ?&gt;&gt;&lt;/script&gt;
      &lt;script src=&lt;?php echo URL . "public/Js/ontology.js" ?&gt;&gt;&lt;/script&gt;
      &lt;script src=&lt;?php echo URL . "public/Js/informativeObject.js" ?&gt;&gt;&lt;/script&gt;
      &lt;script src=&lt;?php echo URL . "public/Js/question.js" ?&gt;&gt;&lt;/script&gt;
  </code></pre>
  
  <p>I want something like</p>
  
  <pre><code>&lt;header&gt; 
  include all css
  include all js
  &lt;/header&gt;
  </code></pre>