1. Removed unused command "DynamoViewModel.CreateConnectionCommand"
2. Removed unused command "ConnectorViewModel.ConnectCommand"
3. Renamed ConnectorViewModel data members to conform to C# coding standard
Removed unused command "NodeViewModel.SetLayoutCommand"
Merge pull request #467 from Benglin/CommandRemoval

Removed three unwanted commands
fixed curve element from vertical line
Merge branch 'master' of github.com:ikeough/Dynamo
Merge branch 'master' into model_xml

Conflicts:
	src/DynamoCore/Models/DynamoModel.cs