Disable the default handling of the pinch event when handling it. (#3334)

* Disable the default handling of the pinch event when handling it.

* Also disable the touch events to prevent double tap zooming.

lib/timeline/Range.js

@@ -664,6 +664,8 @@ Range.prototype._onTouch = function (event) {  // eslint-disable-line no-unused-
   this.props.touch.center = null;
   this.scaleOffset = 0;
   this.deltaDifference = 0;
+  // Disable the browser default handling of this event.
+  util.preventDefault(event);
 };
 
 /**
@@ -675,6 +677,9 @@ Range.prototype._onPinch = function (event) {
   // only allow zooming when configured as zoomable and moveable
   if (!(this.options.zoomable && this.options.moveable)) return;
 
+  // Disable the browser default handling of this event.
+  util.preventDefault(event);
+
   this.props.touch.allowDragging = false;
 
   if (!this.props.touch.center) {