Move the configuration settings to a dialog box for expandability of future settings. Delete GlobalController as it is now not needed.
Move the config settings to an icon in the top right header bar. Move config dialog from inline template to its own template file.
Add 'Hide High/Low Values' feature that toggles the high and low values in the graph to just show average values and reduce the clutter. This is a necessary first step to adding multiple metrics to a chart otherwise the chart would become much too busy.