Kill trailing whitespace in erb files

app/views/users/edit.html.erb

@@ -1,7 +1,7 @@
 <div id="c-users">
   <div id="a-edit">
     <h1>Settings</h1>
-    
+
     <%= simple_form_for @user do |f| %>
       <fieldset>
         <div class="input">
@@ -23,7 +23,7 @@
           <textarea id="user_favorite_tags" class="text optional" rows="5" name="user[favorite_tags]" cols="40"><%= raw @user.favorite_tags %></textarea>
           <span class="hint">A list of whitespace delimited tags that show up in your profile. <%= link_to "Restore from old database", restore_uploaded_tags_user_path(@user), :method => :post, :remote => true %></span>
         </div>
-        
+
         <%= f.input :blacklisted_tags, :hint => "A list of newline delimited tags that you never want to see", :input_html => {:size => "40x5"} %>
       </fieldset>