Remove unused code.
Start work on energy bar chart.
Tweak x axis tick labels for better alignment.
Fix update of chart when toggling layers on/off.
Fix for crisper rendering of rules (align stroke to device pixels).
Start work to display agg inline with dates.
Show generation aggregate totals along top x axis of chart.
Replace reference to global sn.config.defaultTransitionMs with chart-specific configurable parameter.