Changed LevelSelectionButton options.iconToProgressIndicatorYSpace default value from 5 to 10, so that vertical space above stars is consistent with other vertical spacing and margins.  It looked cramped otherwise. Discussed with JB before I did this.
Changed LevelSelectionButton options.iconToProgressIndicatorYSpace default value from 5 to 10, so that vertical space above stars is consistent with other vertical spacing and margins.  It looked cramped otherwise. Discussed with JB before I did this.

phetsims/vegas,phetsims/vegas,phetsims/vegas