Working on Switch widget callback function

Updated IP address in HueControl-04.10.13-work

Signed-off-by: Nick Camps <nick.camps@ymail.com>
Working Power Switches and Brightness Sliders for all 3 lights.

Signed-off-by: Nick Camps <nick.camps@ymail.com>
Working brightness slider and changing brightness label.
Added a colour chooser on Light 1 tab. No functionality yet.

Signed-off-by: Nick Camps <nick.camps@ymail.com>