Merge branch 'feature/#1-Icon' into develop
Added empty button action. Button 'editable' property bound to array controller.
Code refactoring.
Implemented color add action. Color is not saved to color list.
Added bindings for +/- buttons.
Added reusable function for getting selected color list.
Implemented saving color list to disk after adding new color.
Refactoring.
Merge branch 'feature/#2-Button_Plus' into develop
Merge branch 'develop'