Add mirror status to project homepage.

app/assets/stylesheets/pages/projects.scss

@@ -106,13 +106,13 @@
   .project-repo-buttons {
     margin-top: 12px;
     margin-bottom: 0px;
+  }
 
-    .btn {
-      @include btn-gray;
+  .btn {
+    @include btn-gray;
 
-      .count {
-        display: inline-block;
-      }
+    .count {
+      display: inline-block;
     }
   }
 }

app/views/projects/_home_panel.html.haml

@@ -13,6 +13,13 @@
         = link_to project_path(forked_from_project) do
           = forked_from_project.namespace.try(:name)
 
+    - if @project.mirror?
+      - import_url = @project.safe_import_url
+      %p
+        Mirrored from #{link_to import_url, import_url}.
+
+        = render "shared/mirror_status"
+        = render "shared/mirror_update_button", size: "sm"
 
 
   .project-repo-buttons

app/views/shared/_mirror_status.html.haml

+- case @project.mirror_last_update_status
+- when :success
+  Updated #{time_ago_with_tooltip(@project.mirror_last_successful_update_at)}.
+- when :failed
+  - if @project.mirror_ever_updated_successfully?
+    Last successful update #{time_ago_with_tooltip(@project.mirror_last_successful_update_at)}.
+
+  - if can?(current_user, :admin_project, @project)
+    = link_to namespace_project_mirror_path(@project.namespace, @project) do
+      = icon("exclamation-triangle")
+      Failed to update #{time_ago_with_tooltip(@project.mirror_last_update_at)}.
+  - else
+    = icon("exclamation-triangle")
+    Failed to update #{time_ago_with_tooltip(@project.mirror_last_update_at)}.