1) Make a call mark_divelist_changed(TRUE) when the user adds new
cylinder or weight entries.
2) Call mark_divelist_changed(FALSE) in
MainWindow::on_actionClose_triggered() so that each time after
a file is closed or a new one is created it does not ask immediately
the user for a save confirmation for the blank file/divelist.
3) Call mark_divelist_changed(TRUE) once a dive's geo location
has changed in GlobeGPS::changeDiveGeoPosition().
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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