Changed default value of references added
Changed default value of references added

Earlier it was a 0. Now, it simply stays empty if the request failed or
it couldn't find the number of references added

WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard