Add UI to enable/disable front button.

[chris1howell]

There is currently no way to enable/disable the front button short of unplugging. Stations installed outdoors or in publicly accessible locations are venerable to tampering of settings or interrupting a charge.

RAPI command has been incorporated into openevse to enable/disable button $FF B 0 $FF B 1

https://github.com/lincomatic/open_evse/commit/c226ad80166ba79d47b27a96e911276b0a0cacb6

[jeremypoulter]

With the v4 changes the WiFI module now always disables the button and handles the button presses it the WiFi module, so is there still a requirement to implement the disable button logic?

[jeremypoulter]

@chris1howell Any thoughts?

[chris1howell]

Some users want the button disabled regardless of where it is interpenetrated. If someone walks up to an outdoor station they can mess with your station. There should be a way to lockout public access to the button.