Fix MAGN-4015 Can not create a level is there is already a level with the same name
Added test cases for the level nodes
Move GetAllLevels to the utility class
Simplify the utility class
Save render files to temp AppData folder
Merge pull request #2591 from Randy-Ma/magn-4015

Fix MAGN-4015 Can not create a level is there is already a level with th...
Make InternalDateTime public but hidden in library
Merge pull request #2637 from pboyer/DynamoRaaSFixDeux

DynamoRaaS: Save rendered images to AppData folder
Add Dynamo Branch Builder tool.
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Vizcheduler