update this branch from master

www/src/doicontroller.js

@@ -169,7 +169,7 @@ function extractFieldsFromCategories(data) {
 function extractFieldsFromDoi(data) {
   //extract the investigationId from the doi.
   var regExp = RegExp(/\/\w*-*[Ee][Ss][Rr][Ff]-[Ee][Ss]-(\d+)$/);
-  data.investigationId = regExp.exec(data.DOI)[2];
+  data.investigationId = regExp.exec(data.DOI)[1];
 }
 
 // Create the citation for the current work. Citation proposes a recommendation to the reader