CalibrationMetric has been modified to pass a JSON String into the
MetricResult.valueMap and MetricDatabase.insertMetricData will
test to see if metricName==CalibrationMetric, and if so, will
format the database call statement with Field 7 = JSON String
instead of the usual Field 7 = double
Missed the final "}" on the JSON
Changed metadata.ChannelKey to map no_location_code and '--' to '00',
and map 'HR' to '10'.
Minor clean up
Modified default channel mapping for calibration chans (?C0, ?C1)
so that they map to location = "00" and "10" respectively
Test
Removed metadata checks for cal channels since only IU has cal metadata
Added design/ and docs/ back into distro
Made some progress on the II calibration handling
Brought in the develop branch changes