add organizations/projects/index.json language category

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

@@ -6,4 +6,21 @@ json.projects @projects.each do |project|
   json.praised project.praised_by?(current_user)
   json.last_update_time render_unix_time(project.updated_on)
   json.time_ago time_from_now(project.updated_on)
+  json.language do
+    if project.project_language.blank?
+      json.nil!
+    else
+      json.id project.project_language.id
+      json.name project.project_language.name
+    end
+  end
+
+  json.category do
+    if project.project_category.blank?
+      json.nil!
+    else
+      json.id project.project_category.id
+      json.name project.project_category.name
+    end
+  end
 end