- replaced hardcoded www.openstreetmap.org with environment variable

- added preferences action to user
- added column preferences to user table

app/views/notifier/signup_confirm.rhtml

@@ -1,7 +1,7 @@
 Hi,
 
 Somone (hopefully you) would like to create an account over at
-www.openstreetmap.org
+<%= SERVER_URL %>
 
 If this is you, please click the link below to confirm that account.
 

app/views/site/index.rhtml

@@ -36,7 +36,7 @@
         function init(){
 
 			OpenLayers.Util.onImageLoadError = function() {
-				this.src = "http://www.openstreetmap.org/javascript/img/404.png";
+				this.src = "http://<%= SERVER_URL %>/javascript/img/404.png";
 			}
             map = new OpenLayers.Map( "map", 
 				{maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34), maxResolution:156543, units:'meters', projection: "EPSG:41001"} );

app/views/trace/list.rhtml

@@ -2,7 +2,7 @@
 
 <br /><br />
 
-<span class="rsssmall"><a href="<%= url_for :controller => 'trace', :action => 'georss' %>"><img src="http://www.openstreetmap.org/images/RSS.gif" border="0"></a></span> | 
+<span class="rsssmall"><a href="<%= url_for :controller => 'trace', :action => 'georss' %>"><img src="http://<%= SERVER_URL %>/images/RSS.gif" border="0"></a></span> | 
 <% if @user %>
   <%= link_to 'See just your traces', {:controller => 'trace', :action => 'mine'} %>
 <% else %>