ENG-4595: Remove non-determinism warning from Ad-hoc queries.
Schemachange test app: correct the logic error handling UACs that failed (my bad); Tune down the logging around graceful failures in ROProcWithRetry
performance charts: filter data by branch when rendering columns; add plot of latency95
Merge pull request #528 from VoltDB/ENG-4595

ENG-4595: Remove non-determinism warning from Ad-hoc queries.
Merge branch 'master' into ENG-2544
VEM connect, wip