Listing the main menu connected to the database.

Creating a model for the main menu.
Modified template main menu.
Added to the class MainMenuPresenter the method renderDefault().
Changed listing the main menu.

Removed the class MainMenuPresenter.
Listing consists of categories without id_categories and records in table main_menu.
Added module waitress.

Creating a model, presenter and a template for the order.
Orders are displayed according to the tables. Can they adjust status.
Existing statuses:
 wait - incoming
 in progress - processing
 done - done
 cancel - canceled by the client
 canceled - waitress confirmed