Planner: add dive plan output area that replaces dive list

When switching to / from plan mode, we switch to show either the dive plan
detail widget, or the dive list widget.

So far this widget does nothing. This just makes sure it's there.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Planner: show the plan notes in the new widget

That was easy.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Planner: don't include the disclaimer in the dive plan detail widget

We want the disclaimer in the final dive that can be printed, but it's
distracting when shown while planning the dive.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Revert "Show the calculated deco stops in the planner table"

This reverts commit 7d42b53bba235894668ed1f2da3f5d17cd97b9c5.

With the addition of the dive plan details widget we no longer want to
show the deco points in the dive planner points table.

Conflicts:
	qt-ui/diveplanner.cpp