Reset deceleration rate when dragging begins
Reset deceleration rate when dragging begins

Work around for issue:
http://stackoverflow.com/questions/31369538/cannot-change-wkwebviews-scroll-rate-on-ios-9-beta

wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,julienbodet/wikipedia-ios,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,julienbodet/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/wikipedia-ios,wikimedia/wikipedia-ios,montehurd/apps-ios-wikipedia,wikimedia/wikipedia-ios,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,julienbodet/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,wikimedia/wikipedia-ios,josve05a/wikipedia-ios,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,anirudh24seven/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/wikipedia-ios,anirudh24seven/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/wikipedia-ios,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,julienbodet/wikipedia-ios,montehurd/apps-ios-wikipedia,josve05a/wikipedia-ios,anirudh24seven/wikipedia-ios,anirudh24seven/wikipedia-ios