Demand shaper interfering with OpenEVSE

[glynhudson]

It's been reported that Demand Shaper on the emonPi can automatically setup and communicate with the OpenEVSE without user input which can be very confusing: https://community.openenergymonitor.org/t/eco-pv-divert-not-working-after-upgrade-to-v4/17780/27

Short term: Maybe we need a clear way to disable demand shaper in the shape of a big disable toggle. Demand shaper should be disabled by default. When enabled users should be warned not to use the OpenEVSE interface.

Long term: Look at integrating demand shaper into the OpenEVSE interface on the ESP32 OpenEVSE/openevse_esp32_firmware#4

[glynhudson]

Fixed by OpenEVSE/openevse_esp32_firmware@8142002