Fix template reducer to show error message when failed on creating new product category.

Author: gets0ul

src/reducers/templates.js

@@ -25,6 +25,7 @@ import {
   CREATE_PROJECT_TEMPLATE_SUCCESS,
   CREATE_PRODUCT_TEMPLATE_PENDING,
   CREATE_PROJECT_TYPE_PENDING,
+  CREATE_PRODUCT_CATEGORY_FAILURE,
   CREATE_PRODUCT_TEMPLATE_FAILURE,
   CREATE_PROJECT_TYPE_FAILURE,
   CREATE_PRODUCT_TEMPLATE_SUCCESS,
@@ -167,6 +168,7 @@ export default function(state = initialState, action) {
     }
   case ADD_PROJECTS_METADATA_FAILURE:
   case CREATE_PROJECT_TEMPLATE_FAILURE:
+  case CREATE_PRODUCT_CATEGORY_FAILURE:
   case CREATE_PRODUCT_TEMPLATE_FAILURE:
   case CREATE_PROJECT_TYPE_FAILURE:
   case CREATE_MILESTONE_TEMPLATE_FAILURE: