Cross-system message queues

[jashort]

With the potential for staff time tracking, need to decide on a communications system. Queues (for example, ActiveMQ) would work, but that would be another dependency/installation/management thing.

Just checking a certain directory for files worked well with the staff import scripts.

Thoughts:

• Messages shouldn't be lost if the service on the remote end isn't up (hence, queues)
• Separating services by difference concerns still seems like a good idea