* Bug [LOW]: items deselect if a user changes one 
             of the stars of selected items

Not before it goes into plasma:
* Adding multiple items
* Dragging the schreenshots of plasmoids
* Customized recommended by
* GHNS

Done:
* Bug [MEDIUM]: items select when the star is clicked
* Feedback on hovering the star
* The rest of the dialog - buttons, etc.
* Separate (visually) special and normal categories
* Applets without an icon - default icon, category icon