Went back to showing everything on a log scale. Left in code to handle
the case where axis.min is 0.0 so that app does not go into an infinite
loop if bad data is loaded. It's very obvious from the resulting graph
that something is wrong.
Merge branch 'master' of github.com:USGS-CIDA/nar_ui into NAWQAAN-384
Merge pull request #340 from mbucknell/NAWQAAN-384

Nawqaan 384