Workflow - Upgrade / Enhance Auth Token implementation

[tlawrie]

To simplify the coding management of tokens we need to enhance the auth framework.

• System / Global tokens
• Team Tokens
• Workflow Tokens
• User Tokens
• Exchange for Token

As we implement all levels of tokens the same way, this will lead to additional changes

• Update the token implementation in the Workflow Editors UI
• Split the storage of workflow tokens away from the Workflow entity
• Allow User tokens

Potentially this would allow us to combine all the token management screens into one screen to view all the tokens the user has access to and just allow filters on scope etc

[tlawrie]

Service implementation has nearly been completed. Only left to add permissions to a token.

Additionally needs to be documented and front end to provide the ability to create tokens with various permissions and scope