Simplify User#today (#22320).

Patch by Jens Kraemer.

git-svn-id: http://svn.redmine.org/redmine/trunk@15383 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/user.rb

@@ -512,8 +512,7 @@ class User < Principal
     if time_zone.nil?
       Date.today
     else
-      # TODO replace with time_zone.today
-      Time.now.in_time_zone(time_zone).to_date
+      time_zone.today
     end
   end