5.7.0 20170907
* Shrink module configuration webpage
* Fix settings order during startup to allow for displaying debug
messages
* Fix some string length issues
* Add more string length tests by using strncpy
* Add Ai-Thinker RGBW led (AiLight)
* Add Power check and add PulseTime to power check at startup (#526)
* Add Supla Espablo support (#755)
* Add more precision to Sonoff Pow period and power results using
command WattRes 0|1 (#759)
* Add basic internationalization and localization (#763)
* Add more Sonoff Pow range checking (#772)
* Fix invalid JSON (#786, #822)
* Add duplicate check to received RF signal within 2 seconds for Sonoff
Bridge (#810)