Adding 'shortlink' functions which will allow URLs like http://osm.org/go/XXXX suitable for use in twitter, etc...

config/locales/en.yml

@@ -541,6 +541,7 @@ en:
       js_2: "OpenStreetMap uses javascript for its slippy map."
       js_3: 'You may want to try the <a href="http://tah.openstreetmap.org/Browse/">Tiles@Home static tile browser</a> if you are unable to enable javascript.'
       permalink: Permalink
+      shortlink: Shortlink
       license:
         notice: "Licensed under the {{license_name}} license by the {{project_name}} and its contributors."
         license_name: "Creative Commons Attribution-Share Alike 2.0"

config/routes.rb

@@ -114,6 +114,9 @@ ActionController::Routing::Routes.draw do |map|
   map.connect '/create-account.html', :controller => 'user', :action => 'new'
   map.connect '/forgot-password.html', :controller => 'user', :action => 'lost_password'
 
+  # permalink
+  map.connect '/go/:code', :controller => 'site', :action => 'permalink', :code => /[a-zA-Z0-9_@]+=*/
+
   # traces  
   map.connect '/traces', :controller => 'trace', :action => 'list'
   map.connect '/traces/page/:page', :controller => 'trace', :action => 'list'