* To help novice users supply an actual font file from the OS as the default for ShapeStringFontFile.
* The Draft code blocked the use of TTC font files. `Part.makeWireString()` can however handle them (although only the first font in the file can be used).
Additonally:
In a previous PR the bottom spacer was removed from the task panel. This PR brings it back as it is required in some cases. Without it the "..." button of the file selector can become huge.
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