don't draw range slider slide + grab area box in static plots

- these were also no exporting to pdf/eps well
  as they used a  `fill: 'transparent` style

Author: etpinard

src/components/rangeslider/draw.js

@@ -423,6 +423,8 @@ function drawMasks(rangeSlider, gd, axisOpts, opts) {
 }
 
 function drawSlideBox(rangeSlider, gd, axisOpts, opts) {
+    if(gd._context.staticPlot) return;
+
     var slideBox = rangeSlider.selectAll('rect.' + constants.slideBoxClassName)
         .data([0]);
 
@@ -483,6 +485,8 @@ function drawGrabbers(rangeSlider, gd, axisOpts, opts) {
 
     // <g grabarea />
 
+    if(gd._context.staticPlot) return;
+
     var grabAreaFixAttrs = {
         width: constants.grabAreaWidth,
         y: 0,