Energy Dashboard - Sources table - Interactive sorting

[chadbaldwin]

I'm not sure what order the Sources table is currently sorted, because it doesn't appear to be alphabetical on friendly name or numerical on energy/cost. Maybe it's sorted based on entity_id.

Whatever the case...I think it would be tremendously useful to support interactive sorting of that table. The ability to sort Source, Energy and Cost on the fly ascending/descending by clicking on the headers would be great.

Even better would be a way to configure the default sort order...some may prefer to have default be Cost descending, others maybe Source ascending, etc.