让上传组件在没有得到url的情况下，不允许放大预览和下载#3

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Commits on May 11, 2018

Commits on May 14, 2018

Commits on May 15, 2018

上传组件加closeonly参数，可选，是否不允许放大预览和下载
 CodeLittlePrince
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