Fix bubbles positioning when the handleSize is modified.

Author: Valentin Hervieu

dist/rzslider.css

@@ -108,7 +108,7 @@ rzslider span.rz-pointer.rz-active:after {
 }
 
 rzslider span.rz-bubble {
-  top: -32px;
+  bottom: 16px;
   padding: 1px 3px;
   color: #55637d;
   cursor: default;

dist/rzslider.js

@@ -891,7 +891,7 @@ function throttle(func, wait, options) {
      */
     updateSelectionBar: function()
     {
-      this.setWidth(this.selBar, Math.abs(this.maxH.rzsl - this.minH.rzsl));
+      this.setWidth(this.selBar, Math.abs(this.maxH.rzsl - this.minH.rzsl) + this.handleHalfWidth);
       this.setLeft(this.selBar, this.range ? this.minH.rzsl + this.handleHalfWidth : 0);
     },