Adapting header to the new structure

Packages/ohif-user-management/main.js

@@ -0,0 +1,10 @@
+import { OHIF } from 'meteor/ohif:core';
+
+/*
+ * Defines the base OHIF user object
+ */
+const user = {};
+
+OHIF.user = user;
+
+export { user };