title: Translation Selector in TYPO3 TCA (V 8.7)
body: <p>I have a major issue in finishing my plugin. In versions under 8, I have had a dropdown in my custom TCAs to select the language, located above the action buttons on the top. The following code had worked:</p>
  
  <pre><code>    'languageField'            =&gt; 'sys_language_uid',
      'transOrigPointerField'    =&gt; 'l10n_parent',
      'transOrigDiffSourceField' =&gt; 'l10n_diffsource',
  </code></pre>
  
  <p>Neither the database changed, nor have I made major changes to the TCA (except those described in the upgrade tutorial), but under TYPO3 8, I am not able to have the select with the different languages shown again. Do you have any idea, why?</p>
  
  <p>Many thanks
  Stephan</p>