<p>There's two parts to this - firstly, removing the forced loading of the config file, and letting image_optim load the config itself. Secondly, this then enables per-environment image_optim config files, and so we can disable the various workers in the test environment.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/openstreetmap/openstreetmap-website/pull/1795'>https://github.com/openstreetmap/openstreetmap-website/pull/1795</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Remove image_optim config loading override</li>
  <li>Disable image_optim workers in tests</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/openstreetmap-website/pull/1795/files#diff-0">config/application.rb</a>
    (3)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/openstreetmap/openstreetmap-website/pull/1795/files#diff-1">config/image_optim/test.yml</a>
    (11)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/openstreetmap/openstreetmap-website/pull/1795.patch'>https://github.com/openstreetmap/openstreetmap-website/pull/1795.patch</a></li>
  <li><a href='https://github.com/openstreetmap/openstreetmap-website/pull/1795.diff'>https://github.com/openstreetmap/openstreetmap-website/pull/1795.diff</a></li>
</ul>

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