Short Description: Show/Hide SimObj Labels not updating WS item geometries.
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 6.1

Problem: Showing and Hiding SimObj Labels (from a SimObj Display Group 
Info edit) was not completely updating graphics item geometries. This 
showed up in two ways:

(1) Hiding the SimObj label, which reduces the height of the SimObj region
 in the Accounting view, wasn't erasing the top of the old region border.

(2) Also in relation to showing and hiding the SimObj label, Supply and 
 Transfer graphics end-points were not being updated. 

The solution included adding explicit update notifications from the four
Display Group editor dialogs (for Account, Link, Object and Supply Groups)
to the Workspace to update all views.  This new explicit method-based 
notification will work to service also any future Display Group dependent 
display property edits.

NOTE: RiverWare callbacks have NOT been implemented for changes to 
the [Sim] Display Groups, their Display Info records, or their 
RootSelections.  

-------------------------
QtUtils/SimObjGfxItem.cpp
-------------------------

Incorrect bounding rectangle value during _transition_ to hiding the 
SimObj label.  The bounding rectangle value had _become_ valid at the 
conclusion of that "transition" (as a result of a recomputed label text
rectangle), but some drawing junk was left over. See changes in method:

  // pure virtual from QGraphicsItem
  QRectF SimObjGfxItem::boundingRect() const;

-------------------------
Q3GUI/AccountGroupDlg.cpp
Q3GUI/LinkGroupDlg.cpp
Q3GUI/ObjectGroupDlg.cpp
Q3GUI/SupplyGroupDlg.cpp
-------------------------

In the supplyChanges() methods in all four display group dialog classes,
call QGui::displayGroupChangesApplied (_group).

This is ultimately conveyed to the several WorkspaceGfxScene instances 
to update display-group dependent rendering and geometry, e.g. for showing
or hiding the SimObj label.

-------------------------
Q3GUI/QGui.cpp
Q3GUI/QGui.hpp
Q3GUI/Workspace.cpp
Q3GUI/Workspace.hpp
-------------------------

Process "displayGroupChangesApplied" notifications by updating all views,
including end-points of all Supply and Transfer graphics items in the 
Accounting view.

-------------------------
Q3GUI/CanvasRef.cpp
-------------------------

void CanvasRef::updateCanvas (bool reconfigureItems /*=false*/) now also
calls WorkspaceGfxScene::updateAllSupplyEndPoints() to update the end-points
of all Supply and Transfer graphics items.

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