Fixed color balance tool. Problem was: we pretended to do Lift/Gamma/Gain, but in reality we did (1-Offset)/Power/Slope. (slightly modified ASC CDL). So now, the GUI is able to switch modes between ASC CDL-mode and real Lift/Gamma/Gain. It also adds a switch to enable Neutral Black/White flipping (very usefull for black point selection) This closes: [#18078] bugfix #18010 Sequencer lift