CLIENT-116: add drag for left button
CLIENT-116: add drag for left button

wavesplatform/WavesGUI,beregovoy68/WavesGUI,beregovoy68/WavesGUI,beregovoy68/WavesGUI,beregovoy68/WavesGUI,wavesplatform/WavesGUI,wavesplatform/WavesGUI,wavesplatform/WavesGUI