Relocate job_lock from the queue to the JobManager itself.  This fixes NoopQueue not having a job_lock errors seen in Admin->Jobs
Merged in dannon/galaxy-central-prmaker/stable (pull request #527)

[STABLE] Relocate job_lock from the queue to the JobManager itself.  This fixes NoopQueue not having a job_lock errors seen in Admin->Jobs
Additional fixes for install and test framework.