Switched studies in Session to ViewerStudies and WorklistStudies Collections. Fixes studyDate selector issues

Packages/viewerbase/components/studyBrowser/thumbnailEntry/thumbnailEntry.js

@@ -190,6 +190,7 @@ function thumbnailDragEndHandler(e, target) {
 }
 
 Template.thumbnailEntry.onRendered(function() {
+    console.log(this.data);
     var entry = this.find('.thumbnailEntry');
     $(entry).data('seriesInstanceUid', Template.parentData(0).seriesInstanceUid);
     $(entry).data('studyInstanceUid', Template.parentData(1).studyInstanceUid);