Don't crash when trying to open a empty file

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Implement a settingsChanged in DivePlannerWidget

This is so we can default to the GF's from the preferences. We need the
bail handler in createTemporaryPlan, because its triggered when we
change GF's, and if we don't have a stagingDive there, we will access a
NULL-pointer.

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Replaced writing email to, with sending an email to

Seems to read better as "sending an email to"

Signed-off-by: Tim Wootton <tim@tee-jay.demon.co.uk>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Updates main menu entries

Updates summary of main menu entries to those in the new GUI

Signed-off-by: Tim Wootton <tim@tee-jay.demon.co.uk>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Removes unnecessary references to number of elements in

 the date field

Signed-off-by: Tim Wootton <tim@tee-jay.demon.co.uk>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>