In older versions of Kirigami this caused all kinds of problems so we
eventually gave up on it in commit 13c49276d1d4 (Revert "QML UI: make
dive list fold dive trips").
Now this seems to work much better, so let's bring back trip folding!
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
4923aecc9d