Merge pull request #1783 from MITx/bug/btalbot/studio-datepickerzindex

Studio - JQUI's default date picker z-index bug

cms/static/sass/_base.scss

@@ -644,7 +644,7 @@ hr.divide {
   position: absolute;
   top: 0;
   left: 0;
-  z-index: 99999;
+  z-index: 10000;
   padding: 0 10px;
   border-radius: 3px;
   background: rgba(0, 0, 0, 0.85);

cms/static/sass/elements/_jquery-ui-calendar.scss

@@ -8,6 +8,7 @@
   font-family: $sans-serif;
   font-size: 12px;
   @include box-shadow(0 5px 10px rgba(0, 0, 0, 0.1));
+  z-index: 100000 !important;
 
   .ui-widget-header {
     background: $darkGrey;