Job Tracking

[Ehesp]

Jobs should be able to be tracked throughout their lifecycle. Either by Job ID or specific data matching. A tracked job should also show any jobs which created it along with any jobs it has created itself.

[Salakar]

Tags \o/

I'll implement a form of tagging jobs so they can be traced throughout and a tag query api.

Not sure how to go about checking what child jobs a job creates - would require a heavy api change - something like this.Job.create in the runner as opposed to using the global instance - then we know the source.