Multilevel menu

[andriibuts]

As a administrator I want to be able to use different layouts in dropdown menu.

There should be a select-box in the first-level menu items where I can choose the number of columns for level-2 menu items. Default value is 1 column.

In the level-2 menu items shoul be a select-box in which I can choose the column for this menu-item to display. The value of this select will depend on the number of columns choosen in the parent menu item select-box.