fix a copy/paste bug that would have used an invalid format string for
creating file names.
stop hardcoding UUIDs that have constants....
just fixing variable names to be consistent
fix a null pointer https://jira.ihtsdotools.org/browse/OTFISSUE-15
port over the 'CommitLog' functionality from trek
Merge branch 'va-branch' of https://github.com/Apelon-VA/OTF-Versioning-Service.git into va-branch