make widget ctrl key handling become event-base, and move default handling logic to user action handler.
remove onZSSAuxAction, use onAuxActionDirectly
1.refine action handler to care ctrlKeys, 2.tune some command/event, doesn't use onZSSEvt, use onEvt directly (make it more consistent)
finetune:widget onCtrlKey follow zk's spec (care ctrlKeys)
add following api, cellstyle.isLocked,isHidden, sheet.getPcitures(),getCharts().getRowFreeze(),getColumnFreeze()
Merge branch 'origin/3.0'