[Huge] Util Refactor, Dashboard Improvements, Hass.io Auth API, Better Validation Errors, Conditions, Custom Platforms, Substitutions (#234)

* Implement custom sensor platform

* Update

* Ethernet

* Lint

* Fix

* Login page

* Rename cookie secret

* Update manifest

* Update cookie check logic

* Favicon

* Fix

* Favicon manifest

* Fix

* Fix

* Fix

* Use hostname

* Message

* Temporary commit for screenshot

* Automatic board selection

* Undo temporary commit

* Update esphomeyaml-edge

* In-dashboard editing and hosting files locally

* Update esphomeyaml-edge

* Better ANSI color escaping

* Message

* Lint

* Download Efficiency

* Fix gitlab

* Fix

* Rename extra_libraries to libraries

* Add example

* Update README.md

* Update README.md

* Update README.md

* HassIO -> Hass.io

* Updates

* Add update available notice

* Update

* Fix substitutions

* Better error message

* Re-do dashboard ANSI colors

* Only include FastLED if user says so

* Autoscroll logs

* Remove old checks

* Use safer RedirectText

* Improvements

* Fix

* Use enviornment variable

* Use http://hassio/host/info

* Fix conditions

* Update platformio versions

* Revert "Use enviornment variable"

This reverts commit 7f038eb5d2.

* Fix

* README update

* Temp

* Better invalid config messages

* Platformio debug

* Improve error messages

* Debug

* Remove debug

* Multi Conf

* Update

* Better paths

* Remove unused

* Fixes

* Lint

* lib_ignore

* Try fix platformio colors

* Fix dashboard scrolling

* Revert

* Lint

* Revert

esphomeyaml-beta/config.json

@@ -2,7 +2,7 @@
   "name": "esphomeyaml-beta",
   "version": "1.9.3",
   "slug": "esphomeyaml-beta",
-  "description": "Beta version of esphomeyaml HassIO add-on.",
+  "description": "Beta version of esphomeyaml Hass.io add-on.",
   "url": "https://beta.esphomelib.com/esphomeyaml/index.html",
   "startup": "application",
   "webui": "http://[HOST]:[PORT:6052]",