Fixed bug with classlist being null
Fixed bug with classlist being null

Issue was occuring where the el.classList.add function was undefined.
thompsonemerson/ionic,GhostGroup/ionic,rreinold/FitnessDashboard_IonicApp,thompsonemerson/ionic,envistaInteractive/ionic,envistaInteractive/ionic,open-anesthesia/ionic,jgw96/ionic,thompsonemerson/ionic,thompsonemerson/ionic,MarcBT/ionic,KholofeloMoyaba/atajo-ui,KholofeloMoyaba/atajo-ui,ralic/ionic,ralic/ionic,VinceOPS/ionic,ralic/ionic,5amfung/ionic,anongtech/ionic,envistaInteractive/ionic,janglednerves/ionic,rreinold/FitnessDashboard_IonicApp,VinceOPS/ionic,janij/ionic,5amfung/ionic,open-anesthesia/ionic,anongtech/ionic,janij/ionic,5amfung/ionic,5amfung/ionic,open-anesthesia/ionic,janij/ionic,anongtech/ionic,KholofeloMoyaba/atajo-ui,MartinMa/ionic,VinceOPS/ionic,janglednerves/ionic,yanzhihong23/ionic-nono,GhostGroup/ionic,VinceOPS/ionic,sloops77/ionic,rreinold/FitnessDashboard_IonicApp,yanzhihong23/ionic-nono,JoeyAndres/meteoric-sass,janglednerves/ionic,jgw96/ionic,janij/ionic,KholofeloMoyaba/atajo-ui,jgw96/ionic,envistaInteractive/ionic,jgw96/ionic,ralic/ionic,rreinold/FitnessDashboard_IonicApp,GhostGroup/ionic,yanzhihong23/ionic-nono,GhostGroup/ionic,MartinMa/ionic,sloops77/ionic,sloops77/ionic,anongtech/ionic,sloops77/ionic,MarcBT/ionic,MarcBT/ionic,yanzhihong23/ionic-nono,MartinMa/ionic,MarcBT/ionic,jgw96/ionic,open-anesthesia/ionic,MartinMa/ionic,janglednerves/ionic,janglednerves/ionic