espalarm Code

Register a rogue weather node if it talks to you. Unlikely but it just happened.

Never return a NULL timezone

Copy a bit of code from esp-idf to make better build rules (especially to create a build timestamp only when required.

Continue work to organize network switch / interruption

Try to get a grip on reconnects

Alarm : call screen refresh / button activation in the right order.
OledButton : add a (#ifdeffed out) method to debug drawString() in the superclass.
All : rename Active() method to setActive()

remove dead code

Fix calculation of average loop time

Hush up about duplicate seqno. Add more info in network query.

Small bugfix