It seems that this is the way this is supposed to be done - instead of
manually looking at what kind of click we get, Qt decides when to create
a context menu for us - this way things like the Windows Menu button
will work automagically.
As an example I also implemented the "remove dive from trip"
functionality, which exposes some other bugs (like the fact that the
dive that isn't part of a trip ends up being sorted at the very end of
the dive list).
This commit contains a "testSlot" implementation to remind me how to
figure out which dive / trip we are on.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
cd7488491f