Minor tics
Polish report to highlight useful information

Remove 3d plot. I never cared for it, and Greg Smith already
acknowledged its limited utility.  Use "minor tics" with GnuPlot where
appropriate. Format large numbers using thousand separators for
legibility.

Also, remove backend_sync column, and change names of some things to
reflect that their an average of averages.  Make max_latency actually
reflect maximum latency, rather than average maximum latency across
several tests.

The increased legibility of the SQL queries within webreport is intended
to facilitate further hacking by others.

Make tabbed display the default.