diff --git a/app/helpers/render.php-- b/app/helpers/render.php--
deleted file mode 100644
index c25a8ba..0000000
--- a/app/helpers/render.php--
+++ /dev/null
@@ -1,69 +0,0 @@
-<?php
-
-// render config variables array
-function renderConfig($configPart, $indent, $platform=false, $parent='') {
-    global $app_root;
-    global $config;
-        if ($parent === 'platforms') {
-?>
-                        <div class="col-md-8 text-start">
-                            <a class="btn btn-secondary" style="padding: 0px;" href="<?= $app_root ?>?page=config&action=add">add</a>
-                        </div>
-                        <div class="border bg-light" style="padding-left: <?= $indent ?>px; padding-bottom: 20px; padding-top: 20px;">
-<?php   } else {
-?>
-                        <div style="padding-left: <?= $indent ?>px; padding-bottom: 20px;">
-<?php
-        }
-        foreach ($configPart as $config_item => $config_value) {
-            if ($parent === 'platforms') {
-                $indent = 0;
-            }
-?>
-                            <div class="row mb-1" style="padding-left: <?= $indent ?>px;">
-                                <div class="col-md-4 text-end">
-                                    <?= htmlspecialchars($config_item) ?>:
-                                </div>
-<?php
-            if ($parent === 'platforms') { ?>
-                                <div class="col-md-8 text-start">
-                                    <a class="btn btn-secondary" style="padding: 2px;" href="<?= $app_root ?>?platform=<?= htmlspecialchars($config_item) ?>&page=config&action=edit">edit</a>
-<?php
-            // we don't delete the last platform
-            if (count($configPart) <= 1) { ?>
-                                    <span class="btn btn-light" style="padding: 2px;" href="#" data-toggle="tooltip" data-placement="right" data-offset="30.0" title="can't delete the last platform">delete</span>
-<?php           } else { ?>
-                                    <a class="btn btn-danger" style="padding: 2px;" href="<?= $app_root ?>?platform=<?= htmlspecialchars($config_item) ?>&page=config&action=delete">delete</a>
-<?php           } ?>
-                                </div>
-<?php       }
-
-            if (is_array($config_value)) {
-                // here we render recursively nested arrays
-                $indent = $indent + 50;
-                if ($parent === 'platforms') {
-                    $indent = 100;
-                }
-                if ($config_item === 'platforms') {
-                    renderConfig($config_value, $indent, $platform, 'platforms');
-                } else {
-                    renderConfig($config_value, $indent, $platform);
-                }
-                $indent = 0;
-            } else {
-                // if it's not array, just display it
-?>
-                                <div class="border col-md-8 text-start">
-                                    <?= htmlspecialchars($config_value ?? '')?>
-<?= $platform ?>
-                                </div>
-<?php
-            }
-?>
-                            </div>
-<?php
-        }
-    echo '</div>';
-}
-
-?>