Short Description: Fix to Account Item single-selection mechanism (in list).
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 6.1

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Q3GUI/WorkspaceTreeWidget.cpp
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Low-level technical fix in implementation of Single-selection among Account
list items (but multiple selection among SimObj list items).  The following
method needs to IGNORE the "itemEntered" signal if either of the Scrollbars
are being operated.  Otherwise, Account item selections are made during a 
scroll (drag) operation if the grabbed mouse hovers over actual list items.

See changes in method:
  void WorkspaceTreeWidget::local_itemEntered (QTreeWidgetItem* item, int);

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