Rayouf Alhumedhi, 15, had nothing to represent herself online
                                
                                
                                    (Newser) -
                                    When 15-year-old Rayouf Alhumedhi went searching for an emoji to express herself in a group chat room, she came up short. So the Berlin teen chose to create a symbol—the hijab, or headscarf—that has ignited a debate in Europe and beyond about religious freedom, multiculturalism, and women's...