Associate SSA graphnodes to their final assignment graphnode at codegen

1. Move SSA graphnode association at codegen
2. Remove this functionality from the runtime
Merge pull request #1688 from junmendoza/newMaster

Associate SSA graphnodes to their final assignment graphnode at codegen
Repro for MAGN-3576
Extend Floor to take PolyCurve input
Merge branch 'master' of https://github.com/DynamoDS/Dynamo
Add DynamoLauncher project

Adds a program that allows drag and drop launch of Dynamo on top of
Revit. Adds the ability in DynamoRevit to run a file that is passed from
the journal data.
Add debugger attachment.
MAGN-3489

Fix element query to correctly compare family types.
MAGN-3488

Add ForceReexecute to DSElementSelection to ensure that element
selection nodes reexecute on model changes.