get OEmbed urls from the app (youtube url to youtube embed for instance)
integrate OEmbedUtils in EditPostContentFragment
new AutolinkUtils class with blacklisting of certain URL
use AutolinkUtils instead of OEmbedUtils
remove unused OEmbedUtils
blacklist urls (urls from https://github.com/WordPress/WordPress/blob/master/wp-includes/class-oembed.php)
new Autolink tests to check for existing <a href=>
matched URLs must start with one or several whitespaces or a line start
Merge pull request #1963 from wordpress-mobile/issue/1944-oembed-shared-url

fix #1944 oembed shared url