add r2i to toolbox and make toolbox_button visible
optimization region grow,make the grow time less than 1 second(the former one is more than 4 seconds)
make the code more standard according to the advice of HLJ
Merge pull request #40 from liuzhaoguo/move_algorithms_to_tools_box

optimization region growing
Add basic tab and move some functions to it. .
Add basic tab and move some functions to it. .
Merge branch 'master' of github.com:BNUCNL/FreeROI

Conflicts:
	froi/gui/component/listwidget.py
With numpy internal function, the speed of binarization operation improves 6 times.