Added 12 test cases for the Nodes which were not having test cases.

- TrueForAll
- TrueForAny
- Smooth
- Average
- Join
- Combine
Merge pull request #943 from riteshchandawar/master

Added 12 test cases for the Nodes which were not having test cases.
Changed verification for few test cases...

- There were test cases which was having verification on Watch node, so I replaced those with correct nodes.
- Also did some corrections for previous pull request (https://github.com/ikeough/Dynamo/pull/943 )
Merge pull request #959 from riteshchandawar/master

Changed verification for few test cases...
Merge branch 'master' into ChocoButterUI