Various fixes
Various fixes

Don't calculate hidden wheels width; css animation class renames;
changeWheel can change multiple wheels; input change is triggered after
modal is hidden.

mrzzcn/mobiscroll,jeancroy/mobiscroll,mrzzcn/mobiscroll,xuyansong1991/mobiscroll,xuyansong1991/mobiscroll,loki315zx/mobiscroll,Julienedies/mobiscroll,jeancroy/mobiscroll,Julienedies/mobiscroll,loki315zx/mobiscroll