espalarm Code

Cleanup

Create a background task for icon transfer.
Put communication to the Oled in the main task.
Remove an unnecessary copy of the oled pointer, it's global also.

Debug messages to track blocking calls

Fewer messages

Change symbols from ALARM_OFF etc to ARMED_OFF.
Fix bug with passing arm/disarm requests.
Remove esp8266 code fragments.

Give the Siren enums different names than the Alarm enums

Remove part of comment

Required change to compile our code

Small changes

Oops