title: line height option is not show in ckeditor even add the plugin
body: <p><a href="https://i.stack.imgur.com/LzmNB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LzmNB.png" alt="enter image description here"></a><a href="https://i.stack.imgur.com/dxTAc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dxTAc.png" alt="enter image description here"></a>I have download same extra plugins and past the plugins into plugins folder. ckeditor/plugins/lineheight and ckeditor/plugins/language.
  And enable in config.js. But so for the line height and language option is not show in ckeditor.</p>
  
  <pre><code>config.extraPlugins = 'lineheight';
  config.extraPlugins = 'language';
  CKEDITOR.editorConfig = function( config )
  {
      // Define changes to default configuration here. For example:
      // config.language = 'fr';
      // config.uiColor = '#AADC6E';
  };
  </code></pre>