This patch reworks the navigation of the dive details.
- The detailsview is now a list view with page-sized delegates. This
allows horizontal swiping to the next and previous dive.
- The central button now allows to open the edit mode for the dive.
Original patch was done by Marco Martin, but needed to be reapplied by
hand.
Signed-off-by: Sebastian Kügler <sebas@kde.org>
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