Overview of changes in 3.7.3
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* Add Favorites mode
* Bugs fixed:
688561 embed: Don't upscale images, but do downscale them if necessary
688562 We only want the nie:title as the name, not the filename
688562 utils: Use larger thumbnails / icons
688565 load-more-button: Simplify the button's label
688567 embed: Remove flash effect
688568 embed: Use texture background in preview
688569 embed: Hide actors that aren't visible
688742 Update license blurbs for the current FSF address
