Open privacy policy in new tab

Change-Id: Iafebdb5fd6efc7e0f577a70624659640f0867b1d
diff --git a/templates/register.htm b/templates/register.htm
index 61cebea..3030101 100644
--- a/templates/register.htm
+++ b/templates/register.htm
@@ -630,7 +630,7 @@
             <label class="form-check-label fs-4" for="privacy_policy">I have read and agree
                 to to the
                 <?php echo $SERVICE_ACRONYM; ?> <a
-                    href="https://iclc10.ids-mannheim.de/privacy_policy.shtml">Privacy Policy</a>.
+                target="_blank" href="https://iclc10.ids-mannheim.de/privacy_policy.shtml">Privacy Policy</a>.
             </label>
             <div class="invalid-feedback">
                 You need to agree to the privacy policy in order to proceed.