组织首页改版，增加精选、新闻

app/views/organizations/is_pinned_projects/index.json.jbuilder

@@ -0,0 +1,7 @@
+json.total_count @is_pinned_projects.total_count
+json.projects @is_pinned_projects.each do |project|
+  json.partial! "projects/project_detail", project: project&.project
+  json.id project.id
+  json.position project.position
+  json.project_id project.project_id
+end