Fix MAGN-2523 Revit Elements not cleaned up after initial failure of the element creation node
Merge pull request #2950 from Randy-Ma/Revit2015

Merge the master branch to the Revit2015 branch
Merge pull request #2854 from Randy-Ma/magn-2523-fix-option-1

Fix MAGN-2523 Revit Elements not cleaned up after initial failure of the element creation node
Merge branch 'master' into Revit2015