Handles Favorites (EA Items) with add, delete and show/search. The search to find all favorites is defined as Resource in Util.
 public static void RemoveFavorite(Repository rep)
 {
     var f = new Favorite(rep, GetGuidfromSelectedItem(rep));
     f.Delete();
 }
 public static void Favorites(Repository rep)
 {
     var f = new Favorite(rep);
     f.Search();
 }
 public static void AddFavorite(Repository rep)
 {
     var f = new Favorite(rep, GetGuidfromSelectedItem(rep));
     f.Save();
 }