Index: lib/redmine/i18n.rb
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- lib/redmine/i18n.rb	(revision 15148)
+++ lib/redmine/i18n.rb	(revision )
@@ -139,6 +139,7 @@
 
       module Implementation
         include ::I18n::Backend::Base
+        include ::I18n::Backend::Pluralization
 
         # Stores translations for the given locale in memory.
         # This uses a deep merge for the translations hash, so existing