code cleanup
minor
minor
Editor: rename selectColor() to selectVectorColorNumber()
Editor: rename setColour() to setBitmapColor()
code rearrange
Palette: rename currentColour() to currnetColourNumber()
Editor: inline method changeColour(), rename Palette::currentColour() to currentColourNumber()
Palette: rename updateColour() to colorSliderMoved()
Editor: move unused header file
Palette: rename addClick() to clickAddColorButton(), rmClick() to clickRemoveColorButton()
Editor: inline method addColour()