Opencart – restore functionality for the display options item in the cards

OcStore version 2.1.0.2

The result of the actions of unscrupulous contractor had lost the functionality to display options item in the cards.
It is impossible to place an order, do not work filters.

Need to find the cause and restore functionality. At the same time, not to break anything.

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Description of the lost functionality:

Functionality customized. Two types of options: Color and size. Options in card marked buttons tiles.

Color the button shows the picture in color. When choosing the colours right.
Size – the button size name.

Selected options are highlighted in color. By default, the selected first available to order flowers.

1. Feature – In cards are sub-options (they appear in the card product), it is implemented through a bunch of color-size. There is a related option – product with the specified parameters available to order. There is no option – product with the specified parameters is not available for order option is marked in the card as inactive (in this case button select translucent and not user click)

2. Feature – the Color has a complex hierarchy: parent color – displayed in the filter and its child color – in the card. When filtering on the parent color in the filter displays all the cards with a child of color is bound to the parent color. Child color in the filter is not displayed.