Fixing select2 placeholders and reactivity issues

Packages/ohif-study-list/both/schema/servers.js

@@ -55,8 +55,8 @@ export const DICOMWebServer = new SimpleSchema({
     imageRendering: {
         type: String,
         label: 'Image rendering',
-        allowedValues: ['', 'wadouri', 'orthanc'],
-        valuesLabels: ['', 'WADO URI', 'ORTHANC']
+        allowedValues: ['wadouri', 'orthanc'],
+        valuesLabels: ['WADO URI', 'ORTHANC']
     },
     qidoRoot: {
         type: String,
@@ -163,7 +163,7 @@ export const UISettings = new SimpleSchema({
         type: Number,
         label: 'Number of days to be used on Study List date filter',
         min: 1
-    }    
+    }
 });
 
 export const PrefetchSchema = new SimpleSchema({