limesurvey: enable Apache mod_rewrite

The vhost sets AllowOverride All and LimeSurvey ships a root .htaccess
with the rewrite rules its front controller depends on, but mod_rewrite
is not enabled on a fresh Debian install and setup_php does not enable
it either.

Since the .htaccess wraps its rules in <IfModule mod_rewrite.c>, the
block is silently skipped and requests to /rest/v1/* never reach
index.php, returning 404 and breaking the new LimeSurvey editor.

Fixes #16764

Author: Jonathan Starck

install/limesurvey-install.sh

@@ -60,6 +60,7 @@ cat <<EOF >/etc/apache2/sites-enabled/000-default.conf
 EOF
 chown -R www-data:www-data "/opt/limesurvey"
 chmod -R 750 "/opt/limesurvey"
+$STD a2enmod rewrite
 systemctl reload apache2
 rm -rf "$temp_file"
 msg_ok "Set up LimeSurvey"