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diff --git a/web/modules/contrib/entity/src/Form/RevisionRevertForm.php b/web/modules/contrib/entity/src/Form/RevisionRevertForm.php
new file mode 100644
index 000000000..c94c53a0c
--- /dev/null
+++ b/web/modules/contrib/entity/src/Form/RevisionRevertForm.php
@@ -0,0 +1,167 @@
+<?php
+
+namespace Drupal\entity\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
+use Drupal\Core\Entity\RevisionableInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Entity\RevisionLogInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+class RevisionRevertForm extends ConfirmFormBase {
+
+  /**
+   * The entity revision.
+   *
+   * @var \Drupal\Core\Entity\EntityInterface|\Drupal\Core\Entity\RevisionableInterface|\Drupal\Core\Entity\RevisionLogInterface
+   */
+  protected $revision;
+
+  /**
+   * The date formatter.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * The entity bundle information.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeBundleInfoInterface
+   */
+  protected $bundleInformation;
+
+  /**
+   * Creates a new RevisionRevertForm instance.
+   *
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter.
+   * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $bundle_information
+   *   The bundle information.
+   */
+  public function __construct(DateFormatterInterface $date_formatter, EntityTypeBundleInfoInterface $bundle_information) {
+    $this->dateFormatter = $date_formatter;
+    $this->bundleInformation = $bundle_information;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('date.formatter'),
+      $container->get('entity_type.bundle.info')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'entity_revision_revert_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    if ($this->revision instanceof RevisionLogInterface) {
+      return $this->t('Are you sure you want to revert to the revision from %revision-date?', ['%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+    }
+    return $this->t('Are you sure you want to revert the revision?');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    if ($this->revision->getEntityType()->hasLinkTemplate('version-history')) {
+      return $this->revision->toUrl('version-history');
+    }
+    return $this->revision->toUrl();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Revert');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $_entity_revision = NULL, Request $request = NULL) {
+    $this->revision = $_entity_revision;
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // The revision timestamp will be updated when the revision is saved. Keep
+    // the original one for the confirmation message.
+    $this->revision = $this->prepareRevision($this->revision);
+    if ($this->revision instanceof RevisionLogInterface) {
+      $original_revision_timestamp = $this->revision->getRevisionCreationTime();
+
+      $this->revision->setRevisionLogMessage($this->t('Copy of the revision from %date.', ['%date' => $this->dateFormatter->format($original_revision_timestamp)]));
+      drupal_set_message(t('@type %title has been reverted to the revision from %revision-date.', ['@type' => $this->getBundleLabel($this->revision), '%title' => $this->revision->label(), '%revision-date' => $this->dateFormatter->format($original_revision_timestamp)]));
+    }
+    else {
+      drupal_set_message(t('@type %title has been reverted', ['@type' => $this->getBundleLabel($this->revision), '%title' => $this->revision->label()]));
+    }
+
+    $this->revision->save();
+
+    $this->logger('content')->notice('@type: reverted %title revision %revision.', ['@type' => $this->revision->bundle(), '%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    $form_state->setRedirect(
+      "entity.{$this->revision->getEntityTypeId()}.version_history",
+      [$this->revision->getEntityTypeId() => $this->revision->id()]
+    );
+  }
+
+  /**
+   * Prepares a revision to be reverted.
+   *
+   * @param \Drupal\Core\Entity\RevisionableInterface $revision
+   *   The revision to be reverted.
+   *
+   * @return \Drupal\Core\Entity\RevisionableInterface
+   *   The prepared revision ready to be stored.
+   */
+  protected function prepareRevision(RevisionableInterface $revision) {
+    $revision->setNewRevision();
+    $revision->isDefaultRevision(TRUE);
+
+    return $revision;
+  }
+
+  /**
+   * Returns a bundle label.
+   *
+   * @param \Drupal\Core\Entity\RevisionableInterface $revision
+   *   The entity revision.
+   *
+   * @return string
+   */
+  protected function getBundleLabel(RevisionableInterface $revision) {
+    /** @var \Drupal\Core\Entity\EntityInterface|\Drupal\Core\Entity\RevisionableInterface $revision */
+    $bundle_info = $this->bundleInformation->getBundleInfo($revision->getEntityTypeId());
+    return $bundle_info[$revision->bundle()]['label'];
+  }
+
+}