Refactor job processing app to do actual job queue and job subprocess launching, remove queue mananger app, update ocr app to use new job processing app

apps/job_processor/exceptions.py

@@ -0,0 +1,14 @@
+#class WorkerAlreadyDisabled(Exception):
+#    pass
+    
+    
+#class WorkerAlreadyEnabled(Exception):
+#    pass
+
+
+class JobQueuePushError(Exception):
+    pass
+
+
+class JobQueueNoPendingJobs(Exception):
+    pass