added better touch event handling for 'active' state
updated touch delay value

copied value from sencha fastbook
iOS native scrolling test
added native scrolling for iOS scrollers

no change on Android
Merge remote-tracking branch 'origin/gh-pages' into E1291-hsvs
tidy up scroller css updates

fixed scope issue to target all scrollers under iOS
Merge remote-tracking branch 'origin/gh-pages' into E1291-hsvs