Relayout'ing orientation of scrollable legends is off

[etpinard]

See http://codepen.io/etpinard/pen/oLPpkj

In detail:

• going from legend.orientation 'v' to 'h' does not remove the scroll bar
• going from legend.orientation 'v' to 'h' does not remove the scroll handlers
• going from legend.orientation 'h' to 'v' does not add a scroll bar immediately (the scroll bar appears only after attempting to scroll).