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

Packages/lesiontracker/components/studyDateList/studyDateList.html

@@ -1,9 +1,7 @@
 <template name="studyDateList">
     <select id="selectStudyDate">
         {{#each patientStudies}}
-            <option value="{{studyDate}}">{{studyDate}}</option>
+            <option value="{{studyInstanceUid}}">{{studyDate}}</option>
         {{/each}}
     </select>
-
-
 </template>