Sliders labels are now multi line (applies to Channel Groups and Virtual Console sliders)

Scene Editor now remembers the Channel Groups values. Not saved in the project.
Scene Editor now shows all fixtures tabs on the screen. In case they're a lot, it will display "..." beside the name
On Scene Editor it is now possible to switch betwwen tabs by pressing Alt+Left, Alt+Right
On Scene Editor it is now possible to switch between channels values by pressing TAB