Move Jobs to Crystal Quartz

[richard-churchman]

There are several jobs that exist in Jube, characterised as being very long running procedures launched periodically. Currently these jobs exist inside a perpetual loop based on long thread sleep. It works just fine however does not cluster all that well and complicates the tear down of the process.

It is desirable to move Jobs to Quartz.net, indeed Crystal Quartz.net to provide for a user interface into job execution.

Implement Crystal Quartz.net for the purpose of existing jobs. Implement in such a way that additional job binaries can be included to provide for some extensibility of the software without the need for external processes.

All values available in current Dependency Injection should be available, passed to, the Quartz.net context such that the new IJob implementations are a near drop in replacement.

[richard-churchman]

Given #31 background threads are at this time moved to async methods and it should be fairly easy to implement IJob over these.