Easyling Changelog - v709

New features:

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

Fixes:

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.