title: Icons not showing after creating custom theme in Magento 2
body: <p>I made a custom theme that has the magento luma theme as parent, but all icons are not showing on the frontend. A few examples:</p>
  
  <p>searchbar (and cart icon missing)</p>
  
  <p><a href="https://i.stack.imgur.com/ftcsn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ftcsn.png" alt="enter image description here"></a></p>
  
  <p>Stars missing in rating</p>
  
  <p><a href="https://i.stack.imgur.com/Sxs1x.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Sxs1x.png" alt="enter image description here"></a></p>
  
  <p>There are a lot of other places missing these icons. I already tried to do a <code>php bin/magento setup:static-content:deploy</code> with my store languages but to no avail. In my browser console i dont see any 404 errors in resources, and if i look in my folders i can see the fonts are there.</p>
  
  <p>Any ideas?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>as requested a bit of "code", but first the structure is as follows:</p>
  
  <pre><code>Vendor
    - MyTheme
      - web
        -css
          -source
            -variables
              ---.less files
            --- .less files
        -images
      -composer.json 
      -registration.php
      -theme.xml 
  </code></pre>
  
  <p>contents of my theme.xml</p>
  
  <pre><code>&lt;theme xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Config/etc/theme.xsd"&gt;
    &lt;title&gt;MyTheme&lt;/title&gt;
    &lt;parent&gt;Magento/luma&lt;/parent&gt;
  &lt;/theme&gt;
  </code></pre>
  
  <p><strong>Additional info</strong></p>
  
  <p>So i did some digging in the html itself. I found that a :before has the icon. When looking at its css its has the following:</p>
  
  <pre><code>content: '\e61d';
  font-family: FontAwesome;
  </code></pre>
  
  <p>Found in static-m.css</p>
  
  <p>so i tried to edit the content to something else from fontawesome and that works, so that means fontawesome is loaded correctly. So does that mean that the content code does not exists in fontawesome? or does the standard magento icons come from a different library like fontawesome?</p>