Easyling Changelog - v709

1671	feature	frontend	Displays a new button on workbench which opens preview in
1670	feature	frontend	Grayed out area in Highlight View made less opaque

1675	fix	backend	Fix of an edge case where the content type of an already discovered resource stored on an external domain changed to text/html, as a result it became a page of the project, and it's content was processed during crawl.
1676	fix	frontend	Fixed WorkBench dialogs broken because of SubmitEvent incompatibility in Chrome 81 See: https://github.com/dart-lang/sdk/issues/40901
1674	fix	frontend	When reviewing in highlight view, clicking Save&Next in the segment editor may have taken the reviewer to a different part of the page. This made it hard to actually use the highlight view and review the page top to bottom. We created a separate “Save” button in editing UI at the bottom, and it saves the segment without navigating to the next one.