Basic notifications handling.

LMS-11163
Revert "allow rsyslog to be none"
Getting data package files from AWS
Merge pull request #4659 from edx/revert-4652-jarv/only-add-handler-if-rsyslog

Revert "allow rsyslog to be none"
Merge pull request #4572 from edx/ahodges/documentation/DOC764

Ahodges/documentation/doc764
numbering error
Merge pull request #4661 from edx/ahodges/documentation/numbering

numbering error
Merge pull request #4641 from edx/reruns/server-side-handlers

Basic notifications handling.
Allow verified to be offered without audit
fixup! Allow verified to be offered without audit