Add Admin Posts

Admin posts - Each post should have is_published flag and if it not publised shouldnt be visible for the users.

In the admin include Posts page where the admin can add/edit/delete/publish/unpublish possts
The admin posts list should include a filter to search post by title (as scope in the model). Also make it autocomplete field.
Include filters by date and published flag
The edit form should include date field (default to current) and use just-datetime-picker gem; The content field should use tinymce-rails; Also include creator and title fields