[breadcrumb] replace default breadcrumb texts for settings

and enumerations

app/controllers/enumerations_controller.rb

@@ -84,4 +84,8 @@ class EnumerationsController < ApplicationController
   #  flash[:error] = 'Unable to delete enumeration'
   #  redirect_to :action => 'index'
   end
+
+  def default_breadcrumb
+    l(:label_enumerations)
+  end
 end

app/controllers/settings_controller.rb

@@ -58,4 +58,8 @@ class SettingsController < ApplicationController
   rescue Redmine::PluginNotFound
     render_404
   end
+
+  def default_breadcrumb
+    l(:label_settings)
+  end
 end