Fixed some minor bugs related to groups.
I implemented basic color capabilities. Extended ColorDecode.java to handle xy and ct values. Implemented the call to replaceColorData in various homes (command, http, tcp, udp).
Additional to color.r, color.g, color.b which return the color value in 0-255 there is also a value replacement "color.milight".
The usage for that is as follows: udp://ip:port/0x${color.milight:x} where x is a number between 0 and 4 (0 all groups, 1-4 specific group). The group is neccessary in case the color turns out to be white. The correct group on must of course be sent before that udp packet.
Note that milight can only use 255 colors and white is handled completely separate for the rgbw strips, so setting temperature via ct with milight does something but not really the desired result.
