Applied the flash notices patch by Matt Jones (slightly edited).

flash[:notice] and flash[:error] are now used for notice/error messages.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@600 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/trackers_controller.rb

@@ -73,7 +73,7 @@ class TrackersController < ApplicationController
   def destroy
     @tracker = Tracker.find(params[:id])
     unless @tracker.issues.empty?
-      flash[:notice] = "This tracker contains issues and can\'t be deleted."
+      flash[:error] = "This tracker contains issues and can\'t be deleted."
     else
       @tracker.destroy
     end