PRICE - image filtering and manipulation Code

code cleanup

make Curves View resizable, enhance CurvesPath so they can resie with the view and remain editable

allow auto-sizing of the view, even if it still breaks display

highligh current curve

use pre-allocated colors for drawing

update Gorm file

fix typo

work for RGB curves - point setting not yet done

weight the pixel to normalized distance

also define external gauss(,)