added a time series and segment plot class in js and added in the yaml

created a combination of the time series plot and the heatmap plot to create a timeseries and segment plot. It uses most of the MultiSchema class's design but requires both heatmap's and timeplot's certain classes. Most of the redefinition of the functions are just simply to allow both a heatmap and time series to work together. the example_config.yaml now has an example for this plot.