Fix MAGN-4451 strange behavior with Run Automatic and Revit Document close/reopen.
Merge pull request #2408 from ke-yu/RC0.7.2_master

Cherry-pick Randy's pull request 2354.
fix for watch handlers not showing element buttons

Conflicts:
	src/DynamoCore/UI/Views/PreviewControl.xaml.cs
	src/DynamoRevit/ViewModel/RevitVisualizationManager.cs
Change GCRetain() and GCRelease() order
Merge pull request #2423 from Benglin/RC0.7.2_master

Change GCRetain() and GCRelease() order
Fix to handle longest lacing on empty arrays

It used to crash, it now doesn't execute the function

http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-4566
Merge pull request #2439 from junmendoza/RC0.7.2_master

Fix to handle longest lacing on empty arrays
Increase reference count for array elements
Merge pull request #2441 from Benglin/RC0.7.2_master

Increase reference count for array elements