When the user undos/redos the profile should update even
when in edit mode. This is a bit more complicated than
anticipated:
1) We should not do the update when emitting an undo command
from the profile. But we *should* update if it is an undo
command from the maintab (change depth/time).
2) The divepointsplannermodel has to be reset. Side note:
the code is truly abysmal as it sends numerous changed-signals.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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