Merge pull request #258 from mbucknell/NAWQAAN-65

Nawqaan 65
Refactored the time series and plots javascript files so that they are
no longer in the subdirectory full_report nor in the namespace
nar.full_report. They each have there own directories and namespaces
(nar.timeSeries and nar.plots). I moved WaterYearUtils.js to common as
that seemed appropriate.