左侧树状图更改，及部分样式调整

shuishen

2021-06-08 23346a0c7f9eb68a999fab429355a14b592bc2f7

1
.claro .dijitTreeRtl .dijitTreeExpandoLoading {background-image: url("../../icons/images/loadingAnimation_rtl.gif"); background-position: 100% 0;}