Finish MVP for content editing

app/controllers/admin/editable_contents_controller.rb

@@ -16,8 +16,14 @@ class Admin::EditableContentsController < Admin::BaseController
   end
 
   def update
+    return_to = params[:editable_content][:redirect_to].presence
+
     if @editable_content.update(content_params)
-      render json: { status: "success", message: "Content updated" }, status: :ok
+      if return_to
+        redirect_to return_to
+      else
+        render status: :ok
+      end
     else
       render :edit, status: :unprocessable_entity
     end