Fix instance action number value display for zero numbers

app/templates/components/project/instance-action-value-display.emblem

@@ -14,7 +14,7 @@ else if (eq value_type 'timestamp')
   else
     i.wait.value-missing.icon
 else if (eq value_type 'number')
-  if project_instance_action.number_value
+  if (or (eq project_instance_action.number_value 0) project_instance_action.number_value)
     = project_instance_action.number_value
   else
     i.hashtag.value-missing.icon

tests/dummy/app/i18n/translations/attributes.coffee

@@ -27,6 +27,8 @@ translations = attributes:
     batch_size_upper_value: 'Batch size upper'
     reference_date_day_of_week: 'Migratie datum dag in de week'
     reference_date: 'Migratie datum'
+    instance_scope: 'Instance scope'
+    contract: 'Contract'
   project_instance:
     reference_date: 'Date (X)'
     state: 'State'