Adjusting OHIF Viewer to the new structure

OHIFViewer/.meteor/packages

@@ -7,6 +7,7 @@
 # OHIF Packages
 ohif:design
 ohif:core
+ohif:header
 ohif:cornerstone
 ohif:viewerbase
 ohif:study-list
@@ -44,6 +45,7 @@ fastclick@1.0.13
 standard-minifier-css@1.3.2
 standard-minifier-js@1.2.1
 johdirr:meteor-git-rev
+u2622:persistent-session@0.4.4
 aldeed:template-extension
 peppelg:bootstrap-3-modal
 shell-server@0.2.1