Mask panel
Mask icon
Mask toolbar design
Slider|Spin changing slots enabled

Some other...
In eventFilter value unused deleted
Mask toolbox cosmetics
Mask canced button added
Added mask toolbox buttons slots. Not implemented yet
Added structuralElements from task1 tree
maskCursor ended

selection and mask image started
painting mask
mask Release
Merging selection mouse clicking error fixed
selectionMerging function added for selected edition
selectionPreview function added
Added selection buffer for selectionPreview
selection buffer added into MainWindow constructor and destructor
selectionPreview prototipe fixed
some mask fix's
Mask selection redone
Cancel button decomment
selection, selectionAlpha = 0 after deleting
New title