Parser utility refactor

1. Move Parse  impl from graphutils to ParserUtils
2. Refer all parse calls to ParserUtils
3. Created Nunit test for CoreUtils. All tests that test CoreUtils
functions must be implemented here
4. Added First few CoreUtils tests
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into newMaster
Refactor TestFramework helper functions into CoreUtils
Merge pull request #1491 from junmendoza/newMaster

Parser utility refactor + tests