dc terms should be included in publishers

[DanSmith]

Ensure DC terms are included in XML schema and json schema correctly, implement in the c# generator

[jeremyiverson]

From TC face-to-face meeting:

• XML and JSON generators: When reading in primitive type dcTerms, generate all the appropriate properties within the type, like a mixin. This is probably best for all generators except the OWL generator.
• OWL: include the dc: predicates

[jeremyiverson]

• [ ] XML
• [ ] JSON
• [ ] OWL
• [ ] C#
• [ ] Documentation
• [ ] UML