Resolves issue #21 on https://wiki.duraspace.org/display/DSPINT/Release+3.2.0+Tasks
Resolves issue #27 in https://wiki.duraspace.org/display/DSPINT/Release+3.2.0+Tasks: Fixes tendency of SpaceComparisonTaskProcessor to blow up when a manifest is not found.  Needed a try catch to check for NotFoundException.
Resolves issue #25 in https://wiki.duraspace.org/display/DSPINT/Release+3.2.0+Tasks: missing contentId field in BitIntegrityErrorTask.
Resolves issue #19 in https://wiki.duraspace.org/display/DSPINT/Release+3.2.0+Tasks: Adds error message to tasks in dead letter queue
Merge remote-tracking branch 'origin/feature/release-3.2-issue-21' into develop
Merge remote-tracking branch 'origin/feature/release-3.2-issue-19' into develop
Merge remote-tracking branch 'origin/feature/release-3.2-issue-25' into develop
Merge remote-tracking branch 'origin/feature/release-3.2-issue-27' into develop