Support for pausing and resuming deposit jobs.  Pausing enabled during deposit ingest job.  Deposit monitor working.  Preventing throwables from escaping supervisor action loop.
Merge branch 'bagit-resque' into resume-deposit

Conflicts:
	deposit/src/main/java/edu/unc/lib/deposit/work/DepositSupervisor.java
	deposit/src/main/java/edu/unc/lib/deposit/work/JobStatusFactory.java
	metadata/src/main/java/edu/unc/lib/dl/util/RedisWorkerConstants.java
Expiring ingest progress keys
Merge pull request #148 from UNC-Libraries/resume-deposit

Resume deposit