espalarm Code

Avoid crash due to task loop return :
E (93547497) TLS loop: Accept failed, return -74
E (93547497) TLS loop: Last error was: -74 - UNKNOWN ERROR CODE (004A)
E (93547497) FreeRTOS: FreeRTOS Task "TLS task" should not return, Aborting now!
abort() was called at PC 0x4009143f on core 0

Make mutual SSL setting slightly more visible

Report environmental data in JSON instead of unformatted text.
Implement a way for the Android app to instantly query those sensors.

A bit more structure

Document MQTT calls.
Lower some debug verbosity.

Make secure OTA work, also cope with some strangeness in boot sequence after OTA.
Minor other tweaks.

Cleanup (e.g. dead code removal).
Include Keypad.h so we find the USE_ macros everywhere.

Decrease

Decrease

These should not be errors