Fix issue #46, login page should not show the sign up button if there is already a registered user.

Author: TimothyYe

view/admin/login.html

@@ -46,7 +46,7 @@ <h2 class="mdl-card__title-text">
                 <a href="/signup" class="mdl-button mdl-js-button mdl-js-ripple-effect">
                   Sign up
                 </a>
-								{{ end  }}
+								{{ end }}
               </div>
 
             </form>