Rules Versioning

[Clayton7510]

Rules should be able to be versioned independently of the application code. When a new version of rules is published, the application should load the newly published rules and start running the new rules version in place of the old one.

A couple of things to consider:

• in-flight rules should not break during a rules version update
• version updates should have various modes of scheduling (it could use quartz or EJB timer, perhaps)

Initially, repositories for rules could be Maven. Maybe later, Git could be supported.

[Clayton7510]

Starting off, rules can be maintained in Maven as stated above. However, that doesn't really provide a nice mechanism for storing human readable rules, which are addressed in a separate issue. But for this issue, it will do.