Option for long text custom fields to be displayed under the description field (#21705).

Based on patch by Marius BALTEANU.

git-svn-id: http://svn.redmine.org/redmine/trunk@16251 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/custom_field.rb

@@ -89,7 +89,8 @@ class CustomField < ActiveRecord::Base
     'edit_tag_style',
     'user_role',
     'version_status',
-    'extensions_allowed'
+    'extensions_allowed',
+    'full_width_layout'
 
   def format
     @format ||= Redmine::FieldFormat.find(field_format)
@@ -186,6 +187,10 @@ class CustomField < ActiveRecord::Base
     format.totalable_supported
   end
 
+  def full_width_layout?
+    full_width_layout == '1'
+  end
+
   # Returns a ORDER BY clause that can used to sort customized
   # objects by their value of the custom field.
   # Returns nil if the custom field can not be used for sorting.