Add data: URI support to amp-img

[kevinmarks]

https://withknown.com creates AMP versions of pages and links to them. However, if an image is in a data: URI, amp doesn't render it.

AMP version:

http://known.kevinmarks.com/2016/translating-what-you-write-to-other-sites?_t=amp

normal version:

http://known.kevinmarks.com/2016/translating-what-you-write-to-other-sites

[dvoytenko]

@kevinmarks I took a look. I think the problem is not a data URL, but that the image does not have a layout. I added layout attributes and it appears to show:

<amp-img layout=responsive width=400 height=300
                                   class="ui-sortable-handle">
...

See http://jsbin.com/cihalu/edit?html,output

[dvoytenko]

I'll close for now, but please reopen if something is outstanding.