AT missing tech debt

[daneryl]

• SaveTranslation is using the V1 entities save, We are doing this as a quick way of having denormalization in place, this should be reimplemented the v2 way, ideally when we finish AT.
• Tests do not finish properly, we have no way of closing redis connection before test ends.
• RequestEntityTranslation and ATServiceListener have duplicated knowledge, the service queue name
• ATServiceListener receives a factory as its dependency. Rethink the process of injecting dependencies / factories.