Use daily data on summary page dashboard + integrated MyHeatpump app

[TrystanLea]

A: Change the summary page bargraph from a monthly overview to a daily bargraph that replicates the emoncms.org My Heatpump daily bargraph showing electric, heat, outside temperature and COP.

B: a second step or perhaps combined with step A is to copy the full MyHeatpump app so that it runs from within HeatpumpMonitor.org. This will enable better privacy control by removing the need to share the MyHeatpump app link with the read api key present in the URL and potentially allow other levels of privacy control e.g the option to disable/enable access to the detailed 10s data at the users will.