[SPIFFS] When a new frontend is uploaded settings are lost

[AIFanatic]

In GitLab by @nm on Jan 5, 2019, 10:38

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[AIFanatic]

In GitLab by @nm on Jan 5, 2019, 10:39

Lost due to settings and frontend being stored in SPIFFS.
A possible solution is to create another partition for settings or store settings data on EEPROM