espalarm Code

Remove Arduino String from Oled as well.
Add QR code on screen 3 to assist in enlisting cell phones to connect.

Decrease verbosity

Don't just use ACME if NATted or not (inconclusive criteria).
Configuration can now also be read from a file, not hardcoded.
FTP server enabled by default if neither a config file nor hardcoding is present.
So you can upload a file initially ;-)

Remove warning.
Lower verbosity.

FTP server works on both IPv4 and IPv6 now.

Now works over IPv6 but not over IPv4

FTP IPv6 readyness, step 1 : use v6 APIs and still be able to work on IPv4

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Decrease dependency on Arduino libraries.
Fix minor bugs.
Make partial builds (excluding some modules via Keypad.h) possible to decrease image size.

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Remove stale definition