refactoring_sandbox : UFE : Duplicate Prim Issues

[cfmoore007]

Issues :

1. if an object was already moved on the stage, and you duplicate, the duplicate is created at the original position ( not the modified position )

2. no prim shows up in outliner if you have it expanded hierarchy under the proxyShape ( if you leave the proxy shape hiearchy hidden, it will show up )

3. after saving file, and re-opening it , the duplicates are lost
   the session layer only has :

over "pSphere4"
{
double3 xformOp:translate = (-6.07144779549791, 0, 0)
}

over "pSphere5"
{
double3 xformOp:translate = (6.175688405241867, 0, 0)
}

no definitions for what pSphere4 and pSphere5 are present ( actually they are never reflected in the session layer at all )

Testing Environment :

(Linux) Maya 2019.2
refactoring_sandbox ( d0bb624 ) and Pixar USD dev ( b85ddac )

( Windows ) beta ( latest PR )
refactoring_sandbox ( w/ PR#69 ) and Pixar USD-rc3

[cfmoore007]

Item 3 above is now covered under #269
I'll double check the first 2 issues mentioned.
If everyone's cool with it, I'll open up separate issues to reflect those and close out this original 'catch all' issue.

[cfmoore007]

Item 1 is now covered under : #309

[cfmoore007]

Item 2 is covered in : #74
Closing this out.