Adjustment to 5902 fix, restoring technically redundant check in cwOutputDeviceMgr::dump().
Bug Number: 5902
Release notes (y/n): Yes
For Release Nums: 7.0.4

The cwOutputDeviceMgr::dump() method had effectively redundant checks for 
_omitting_ output devices (cwOutputDevice) from the generated model file 
which were EDIT COPIES of an original device.  One of those two checks had 
been dropped out in the fix to Gnats 5902 of a few days ago.  (I discovered 
this by just reviewing the "diffs").  I did just now confirm, in testing, 
that the dropped check was, in fact, redundant (by doing a model save at 
a time when configuration editor dialogs for all types of Output Devices 
were open).  But I am now restoring this redundant check, which tests a 
more fundamental indication of this condition (an output device instance 
being an 'edit copy'):

   if (dev->isEditCopy())
   {
      // std::cout << mname << " [#" << callCnt << ", " << i << "]"
      //   << " SKIPPING EDIT COPY: \"" << qPrintable (theName) << "\""
      //   << std::endl;

      continue; //---------
   }

Fix: Plot Pages created in OutputManager not saved in the model file [5902]
a3122dd50a1b4d7c9af9f5e0aab6e8e94120044a  (master, 7.1 dev)
cc044c3657325f38c58930df7c742a9037c757bd  (Release_70, 7.0.3)

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