change cursor shape while editing
BF in crosshair display
adjust the layout
Merge pull request #56 from liuzhaoguo/move_algorithms_to_tools_box

adjust the layout
Combined the voxel, ROI and ROI bacth function in a single dialog.
Merge pull request #57 from zhouguangfu/master

Combined the voxel, ROI and ROI bacth function in a single dialog.
Merge pull request #58 from sealhuang/change-cursor-in-edit

Change cursor while editing, and fix a crosshair display bug