Display the message after settings updating is completed.

src/main/twirl/settings/options.scala.html

@@ -1,9 +1,15 @@
-@(repository: service.RepositoryService.RepositoryInfo)(implicit context: app.Context)
+@(repository: service.RepositoryService.RepositoryInfo, info: Option[Any])(implicit context: app.Context)
 @import context._
 @import view.helpers._
 @html.main("Settings"){
   @html.header("settings", repository)
   @menu("options", repository){
+    @if(info.isDefined){
+      <div class="alert alert-info">
+        <button type="button" class="close" data-dismiss="alert">×</button>
+        @info
+      </div>
+    }
     <form id="form" method="post" action="@url(repository)/settings/options" validate="true">
       <div class="box">
         <div class="box-header">Settings</div>