Search results have wonky UX

[dan-simon]

When using search, puzzles in metas will have an extra layer of indentation compared to puzzles not in metas, even if the metas aren't visible. Picture (red is me adding text).

[dan-simon]

Also these puzzles were initially in the other order, so searching also made them switch order. Still not a big deal though.

[rgossiaux]

The interaction with collapsed puzzles is also potentially confusing, where a puzzle you're searching for might not appear obviously because its parent meta is also in the search results and is collapsed (see #677 )