Split up work package attributes helper method by responsibility

app/helpers/work_packages_helper.rb

@@ -330,19 +330,25 @@ module WorkPackagesHelper
     ].compact
   end
 
-  def work_package_show_attributes(work_package)
+  def work_package_show_attribute_list(work_package)
     main_attributes = work_package_show_main_attributes(work_package)
     custom_field_attributes = work_package_show_custom_fields(work_package)
     hook_attributes = YAML::load(call_hook(:view_work_packages_show_details_bottom, :issue => work_package))
 
-    attribute_list = (main_attributes | custom_field_attributes | (hook_attributes || [])).compact
+    (main_attributes | custom_field_attributes | (hook_attributes || [])).compact
+  end
 
+  def group_work_package_attributes(attribute_list)
     attributes = {}
     attributes[:left], attributes[:right] = attribute_list.each_slice((attribute_list.count+1) / 2).to_a
 
     attributes
   end
 
+  def work_package_show_attributes(work_package)
+    group_work_package_attributes work_package_show_attribute_list(work_package)
+  end
+
   def work_package_show_table_row(attribute, klass = nil, &block)
     klass = attribute.to_s.dasherize if klass.nil?