range slider width does not update on relayout

[etpinard]

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

First reported on http://community.plot.ly/t/unable-to-resize-rangeslider-with-plot-resize/1370

[etpinard]

Looks like pretty much all rangeslider attributes don't update upon Plotly.relayout.

To fix this,

• we could write an updateSlider routine that updates the relevant slider parts (created via createSlider).
• or rewrite the createSlider routine using d3 data join to handle both creation and updates in one, similar to how most of our other components function (e.g. Legend, RangeSelector, ...)

cc @mdtusz

[etpinard]

range sliders should also update and extendTraces (see community post)