improve config

conf/app.php

@@ -53,7 +53,7 @@ $configs = array(
     'supportedVideoExts' => array('mp4', 'mov', 'm3u8'),
     'screenshot_start' => 1000,     //视频播放页快照截取开始时间，单位：毫秒
     'screenshot_expire_seconds' => 315360000,   //视频封面图缓存3650天
-    'enableSmallImage' => true,     //开启图片小尺寸缩略图
+    'enableSmallImage' => true,     //开启图片小尺寸缩略图，设置 false 则关闭
 
     /*
     //视频皮肤配置

themes/beauty/views/layout/main.php

@@ -102,7 +102,7 @@ require_once __DIR__ . '/../../../../plugins/Html.php';
     <script src="/js/video.min.js"></script>
     <script src="/js/beauty.js?v<?= Html::getStaticFileVersion('beauty.js', 'js') ?>"></script>
     <script>
-        <?php if (FSC::$app['config']['enableSmallImage'] == false) {
+        <?php if (empty(FSC::$app['config']['enableSmallImage']) || FSC::$app['config']['enableSmallImage'] == 'false') {
             echo <<<eof
 var disableSmallImage = true;
 eof;