Add X-Frame-Options header according to the settings described here…#133
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liweinan wants to merge 1 commit intoresteasy:mainfrom 
Open
Add `X-Frame-Options` header according to the settings described here…#133liweinan wants to merge 1 commit intoresteasy:mainfrom 
liweinan wants to merge 1 commit intoresteasy:mainfrom