Implemented relative layout in arduino-ble UI. Moved CSS to file.
Minor spelling corrections.
arduino-ble: set canvas's height to container's. Set default relative height.
Merge pull request #26 from Sionarch/master

Implemented relative grid layout in arduino-ble UI. Moved CSS to file.
Moved (back) error and console redirection to start of JS code.
Added comments about error- and console redirection.
Moved hue-lights JS code to file. Added console- and error redirection.
Corrected arduino-led examples bug regarding a callback argument.
Added alert box as error in arduino-led example apps.
Simplified example ble-scan and added new example ble-rssi.