Reorganize configuration

[SvenFestersen]

While working on the documentation I realized that the configuration object does not have a logical structure: the map settings are a child of the MQTT configuration and also contain an unused option ("border"). I would like to refactor the configuration:

• move mqtt.mapSettings to the top level
• remove mapSettings.border
• and while I'm on it: address issue #11 and make the Configuration object write config.json only if it does not exist

Since this is a breaking change for existing configurations, I would like to know if there are any objections to this plan?

[Hypfer]

Since it's version 0.2.0, I guess that you can just break it. Maybe add a console.info with that information

[m4rk89]

Hi!

I have installed this as an addon from HA's store. Could you help me what should I use for the webserver? webserver.enabled: true is not working anymore if I am configuring it from the HA's interface.