"Out Of Box Experience" enhancements

[forfuncsake]

On first start (i.e. after flashing), the ESP8266 should start up in WiFi Access Point mode.
There should be a simple UI available to adjust all configurable options, including setting up WiFi client credentials.
Config/credentials should be saved to storage and read/used on subsequent starts.
Option should be available in UI to reset (just wipe storage?).
Perhaps even allow for firmware upload