No longer hiding embeds when JS is disabled
Embeds now use min-height to avoid clipping Instagram embeds (which aren't 16:9)
Reverted previous min-height change, caused problems with YouTube and other embeds
Added ReaderIframeScanner to enable resizing iframes, moved HTML routines from ReaderImageScanner to new ReaderHtmlUtils.
Optimized image/iframe parsing
 Code style tweaks, also now setting IFRAMES to include frameborder='0' allowfullscreen='true' allowtransparency='true'
IFRAMEs are now horizontally centered
Merge pull request #1922 from wordpress-mobile/issue/1909-reader-embeds

issue/1909-reader-embeds