title: Intellij idea: Gwt cannot find CSS classes
body: <p>I am running Intellij Idea on Ubuntu, where I am trying out a GWT project. I am trying out the StockWatcher project, but whenever I add css classes to it, it complains they are not found. <strong>I searched for the same problem, but changing paths to CSS didn't help</strong>.  Any ideas. 
  Screenshot :</p>
  
  <p><a href="https://i.stack.imgur.com/BdsmU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BdsmU.png" alt="enter image description here"></a></p>
  
  <p>Here is the gwt.xml :</p>
  
  <pre><code>&lt;!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.7.0//EN"
    "http://gwtproject.org/doctype/2.7.0/gwt-module.dtd"&gt;
  &lt;module rename-to='stockwatcher'&gt;
  
    &lt;inherits name='com.google.gwt.user.User'/&gt;
    &lt;inherits name='com.google.gwt.user.theme.dark.Dark'/&gt;
    &lt;entry-point class='com.google.gwt.sample.stockwatcher.client.StockWatcher'/&gt;
    &lt;source path='client'/&gt;
    &lt;source path='shared'/&gt;
  
    &lt;!-- allow Super Dev Mode --&gt;
    &lt;add-linker name="xsiframe"/&gt;
  &lt;/module&gt;
  </code></pre>
  
  <p>html file :</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
      &lt;meta http-equiv="content-type" content="text/html; charset=UTF-8"&gt;
      &lt;link type="text/css" rel="stylesheet" href="StockWatcher.css"&gt;
      &lt;title&gt;StockWatcher&lt;/title&gt;
      &lt;script src="stockwatcher/stockwatcher.nocache.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;h1&gt;StockWatcher&lt;/h1&gt;
  &lt;div id="stockList"&gt;&lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Is there any other information required, kindly let me know. Thank you. </p>