Revert "Use the slow jQuery path to animate scrollTop"
Revert "Use the slow jQuery path to animate scrollTop"

This reverts commit 5f71cf63ce018bc1631a2946c67f1edb0e89fe35.

NUKnightLab/TimelineJS,deenjohn/TimelineJS,NUKnightLab/TimelineJS,anxintiancai/TimelineJS,JoaquinSiabra/TimelineJS,JoaquinSiabra/TimelineJS,anxintiancai/TimelineJS,NUKnightLab/TimelineJS,LauraHilliger/TimelineJS,LauraHilliger/TimelineJS,1modm/TimelineJS,deenjohn/TimelineJS,stea4lth/TimelineJS,JoaquinSiabra/TimelineJS,ryekee/TimelineJS,pom95/timeline,landsurveyorsunited/TimelineJS,landsurveyorsunited/TimelineJS,noikiy/TimelineJS,ryekee/TimelineJS,james-logan/TimelineJS,1modm/TimelineJS,djaney/TimelineJS,james-logan/TimelineJS,LauraHilliger/TimelineJS,zstao/TimelineJS,anxintiancai/TimelineJS,1modm/TimelineJS,deenjohn/TimelineJS,zstao/TimelineJS,james-logan/TimelineJS,stea4lth/TimelineJS,ycaihua/TimelineJS,zstao/TimelineJS,pom95/timeline,ycaihua/TimelineJS,ycaihua/TimelineJS,noikiy/TimelineJS,landsurveyorsunited/TimelineJS,djaney/TimelineJS,ryekee/TimelineJS,stea4lth/TimelineJS,djaney/TimelineJS,pom95/timeline,noikiy/TimelineJS