Comment 2 for bug 1417362

A few strategies that I've considered:

1. Move these settings to the block layout section instead of having them in the block config. (i.e., next to the edit icon that opens the block config, we'd have some little icon to indicate that the block is collapsed/retractable)

2. Remove the "retractable" setting and only have the "automatically retracted" setting, the idea being that users are probably much more often interested in having a retracted block rather than a retractable block. But a scan of the data in a large client site found quite a few retractable but not automatically retracted blocks, so this probably isn't a good idea.

3. Consolidate the two checkboxes into one control with three states (off, retractable, automatically retracted).

I've pushed a patch to achieve strategy #3.