Don't allow banned ip addresses to make changes

Previously banned ip addresses couldn't make new accounts, but if they
get an account somehow the ip ban wouldn't prevent them from making
edits.

app/controllers/application_controller.rb

@@ -118,7 +118,7 @@ protected
 
   %w(member banned builder gold platinum janitor moderator admin).each do |level|
     define_method("#{level}_only") do
-      if !CurrentUser.user.is_banned? && CurrentUser.user.__send__("is_#{level}?")
+      if !CurrentUser.user.is_banned_or_ip_banned? && CurrentUser.user.__send__("is_#{level}?")
         true
       else
         access_denied()