Display the lock icon for private repositories.

src/main/twirl/index.scala.html

@@ -1,5 +1,6 @@
 @(repositories: List[service.RepositoryService.RepositoryInfo])(implicit context: app.Context)
 @import context._
+@import service.RepositoryService._
 @main("GitBucket"){
   <h3>Recent updated repositories</h3>
   @repositories.map { repository =>
@@ -8,6 +9,9 @@
         <a href="@path/@repository.owner">@repository.owner</a>
         /
         <a href="@path/@repository.owner/@repository.name">@repository.name</a>
+        @if(repository.repository.repositoryType == Private){
+          <i class="icon-lock"></i>
+        }
       </div>
       @if(repository.repository.description.isDefined){
         <div>@repository.repository.description</div>