Implement TraderX workflows in Conductor

## Feature Request

### Description of Problem:
When TraderX is deployed as a distributed application made of microservices, flows must be executed in a robust and scalable way.

### Potential Solutions:
By implementing TraderX workflows in [Conductor](https://github.com/Netflix/conductor/), reliability and scalability will be insured. Workflows sit between UI and services removing the need to implement the routing between services by additional services or hard link services, as well as managing the application context. TraderX services will be de facto loosely coupled, and will bring a more secure way to implement future evolutions.