refs #15235 [fid] refactor registrations forms

* add legend for required fields
* fix moving label by click on eula
* set checkbox by click on label
* add back buttons to policy and terms in lightbox

themes/fid/templates/fid/user/create.phtml

@@ -247,12 +247,12 @@ $elemEulaAccepted->setAttribute('id', $elemEulaAccepted->getAttribute('name') ??
         <?= $this->formElement($elemEulaAccepted) ?>
         <?= $this->formLabel()->openTag($elemEulaAccepted) ?>
         <?= $this->translate("fid::policy_text") ?>
-        <? $url = $this->url('fid/user/policy') ?>
+        <?php $url = $this->url('fid/user/policy') ?>
         <a data-lightbox href="<?= $url ?>">
             <?= $this->translate("fid::policy") ?>
         </a>
         <?= $this->translate("fid::terms_text") ?>
-        <? $url = $this->url('fid/user/terms') ?>
+        <?php $url = $this->url('fid/user/terms') ?>
         <a data-lightbox href="<?= $url ?>">
             <?= $this->translate("fid::terms") ?>
         </a>.