fix(slidebox): prevent resize when hidden

Closes #2817

Author: adamdbradley

Diff for: js/views/sliderView.js

@@ -42,6 +42,11 @@ ionic.views.Slider = ionic.views.View.inherit({
 
     function setup() {
 
+      // do not setup if the container has no width
+      if (!container.offsetWidth) {
+        return;
+      }
+
       // cache slides
       slides = element.children;
       length = slides.length;