Add option to disable local storage cache of servers

platform/viewer/public/config/default.js

@@ -4,6 +4,7 @@ window.config = {
   extensions: [],
   showStudyList: true,
   filterQueryParam: false,
+  disableServersCache: false,
   servers: {
     dicomWeb: [
       {

platform/viewer/src/store/index.js

@@ -24,6 +24,10 @@ const preloadedState = {
   ...sessionStorage.loadState(),
 };
 
+if (window.disableServersCache === true) {
+  delete preloadedState.servers;
+}
+
 const store = createStore(
   rootReducer,
   preloadedState,