users: add /settings page.

Add /settings page and link to it instead of /users/:id/edit.

app/views/static/site_map.html.erb

@@ -120,7 +120,7 @@
           <li><%= link_to "Sign up", new_user_path %></li>
         <% else %>
           <li><%= link_to "Profile", profile_path %></li>
-          <li><%= link_to "Settings", edit_user_path(CurrentUser.user) %></li>
+          <li><%= link_to "Settings", settings_path %></li>
           <% if CurrentUser.is_gold? %>
             <li><%= link_to "Change name", new_user_name_change_request_path %></li>
           <% end %>

app/views/users/_secondary_links.html.erb

@@ -11,8 +11,8 @@
     <% if @user && !@user.new_record? && !CurrentUser.user.is_anonymous? %>
       <li>|</li>
       <% if @user.id == CurrentUser.user.id %>
-        <%= subnav_link_to "Settings", edit_user_path(CurrentUser.user) %>
         <%= subnav_link_to "Profile", profile_path %>
+        <%= subnav_link_to "Settings", settings_path %>
         <%= subnav_link_to "Messages #{CurrentUser.user.dmail_count}", dmails_current_folder_path %>
 
         <% if !@user.is_platinum? %>