Add Google authentication

templates/user_login.php

@@ -14,7 +14,13 @@
     <?= Helper\form_label(t('Password'), 'password') ?>
     <?= Helper\form_password('password', $values, $errors, array('required')) ?>
 
-    <?= Helper\form_checkbox('remember_me', t('Remember Me'), 1) ?>
+    <?= Helper\form_checkbox('remember_me', t('Remember Me'), 1) ?><br/>
+
+    <?php if (GOOGLE_AUTH): ?>
+        <p>
+            <a href="?controller=user&amp;action=google"><?= t('Login with my Google Account') ?></a>
+        </p>
+    <?php endif ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Sign in') ?>" class="btn btn-blue"/>