Remove unbound variable warnings

Remove unbound variable warnings that were resolved at runtime
Beginning of zero touch example.
Clean up SyncDataManager
Create new guid and send NodeDeleted event
Add comment
Allow empty nodemodel set
More properties, methods, and comments.
Merged few files for earlier review
fix to changes in autocomplete insertion
minor fix
Updated scheduler test cases for "QueryMirrorDataAsyncTask"
EvaluationCompleted event issue
Move sample code into Samples directory.
addressed review comments
Resolve conflicts
Merge pull request #3009 from aparajit-pratap/fixAggressiveAutoComplete

Fix in autocomplete for insertion of completion item and closing completion window
Remove Failure category for some language test cases
Update line ending character
Merge pull request #3007 from ke-yu/fix_magn5128

Fix issue that converting nodes to custom node doesn't delete original node
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into QueryTask