fix(masterdata): do not show no method error if billing API is down (#1401)

Author: andypf

plugins/masterdata_cockpit/app/views/masterdata_cockpit/project_masterdata/_project_details.html.haml

@@ -3,14 +3,11 @@
     .col-sm-4.details-label
       Name
     .col-sm-8.details-value
-      = @project.name
+      = @project&.name
   .row
     .col-sm-4.details-label
       Description
     .col-sm-8.details-value
       =# use active project here because at the moment masterdata api supports max. 255 chars
       %span.description
-        - if @project.description
-          = @project.description
-        - else
-          \-
+        = @project&.description || '-'