Add functionality to the opensource cms (js and php)

I would like to add the possibility to add new pages to the Sitecake cms. With jquery add a button to the admin bar and then show the available options to create new pages for example normal pages, blog pages and portfolio. The setup a scan that after every update or by manual trigger check all folder (collections) to update the index file which can be used to create overview pages. View the briefing attached to this project to read about the description.