continue consolidating packages, converting various pieces to react

Packages/ohif-viewerbase/client/lib/StackManager.js

@@ -1,11 +1,13 @@
 import { OHIF } from 'meteor/ohif:core';
 import { getImageId } from './getImageId';
-import { OHIFError } from './classes/OHIFError';
 
 let stackMap = {};
 let configuration = {};
 const stackUpdatedCallbacks = [];
 
+const { OHIFError } = OHIF.classes;
+
+
 /**
  * Loop through the current series and add metadata to the
  * Cornerstone meta data provider. This will be used to fill information