[erp5storage] do not use the portal type translated title value

Thanks to Thomas Gambier for the fix.

src/jio.storage/erp5storage.js

@@ -103,7 +103,8 @@
   function extractPropertyFromFormJSON(json) {
     var form = json._embedded._view,
       converted_json = {
-        portal_type: json._links.type.name
+        portal_type: new URI(json._links.type.href).segment(2)
+                                                   .replace("portal_types/", "")
       },
       form_data_json = {},
       field,

test/jio.storage/erp5storage.tests.js

@@ -146,7 +146,8 @@
         "_bar": "john doo",
         "_links": {
           type: {
-            name: "Person"
+            name: "Translated Person",
+            href: "urn:jio:get:portal_types/Person"
           }
         },
         "_embedded": {
@@ -215,7 +216,8 @@
         "_bar": "john doo",
         "_links": {
           type: {
-            name: "Person"
+            name: "Translated Person",
+            href: "urn:jio:get:portal_types/Person"
           }
         },
         "_embedded": {
@@ -275,7 +277,8 @@
         "_bar": "john doo",
         "_links": {
           type: {
-            name: "Person"
+            name: "Translated Person",
+            href: "urn:jio:get:portal_types/Person"
           },
           parent: {
             href: "urn:jio:get:foo_module"