This is a somewhat hacky commit. For a very long time, the delete
from the divelist on mobile crashed. That is, not always for anyone,
but for me almost consistently. This commit tries to solve it.
I found that trying to save the delete immediately after removing
data from the underlying model seemed to cause the crash. Hacking
around, I found that a simple beginResetModel/endResetModel between
the delete of the underlying model data and actual save is
sufficient to solve the crash.
The big question is, why does this all work? I suspect some of race
condition between deleting model data, and giving the QML engine
the opportunity to do its thing.
This is also related to issue #311, but that is not implemented
here.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>