pull-request: trip handling

[Miika Turkia]

On Tue, Sep 4, 2012 at 6:55 AM, Dirk Hohndel <dirk at hohndel.org> wrote:
>
> The list is getting longer, the set of commits is getting more stable.
> I think we are getting there.
>
> This fixes yet one more crash that Henrik reported and adds the ability
> to merge with the trip below as well (as suggested by Miika)
>
> Feedback welcome, as always.

Here are some improvements that come to mind:

- Add number of dives within a trip to the #-column
- Show start and end date of a trip in the time field instead of exact time
- Allow sorting dive trips based on Trip location (on collapsed state)
- Some trip averages like depth, temp, SAC could  be calculated to the
trip line. Also total time below surface

I am getting a crash whenever I import an XML dive file.
- ./subsurface dives/test23.xml
- Import dives/test22.xml

miika