Attempting to solve nullpointer exception from #266
Merge branch 'bugfix/cleanup-checkpoint' into bugfix/cleanup-checkpoint-nullfix
Formatting
Remove more PURGE database stuff
Begin solving #266 delete-not-in-winner issue (work in progress, syntax errors)
Only compare old local branch with winner when cleanup occurred
Cont'd #266: Now successfully deleting local files that were cleaned up; however, next 'up' still fails.
Assumption: no local databaseversionheaders implies all remote databases are unknown is false. If all databaseversions are deleted, remote database files might be known, but empty.
Patching numbers in tests