左侧目录树优化，及搜索部分样式调整，部分图片路径更改

shuishen

2021-06-11 95c1f10a276a69ce4fdcc72e68a35c796581d143

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<div class="dijitReset dijitInline dijitMenuItem dijitMenuItemLabel" data-dojo-attach-point="focusNode"
         role="menuitem" tabIndex="-1">
    <span data-dojo-attach-point="containerNode,textDirNode"></span>
</div>