Responsiveness and rendering issue with ProductsPreview component

[szmarkiewicz]

ProductsPreview component needs restructuring and proper handling of its 'absolute' positioned elements because of the following issues:

• the component rerenders on clicking the profile menu
• changing from lower indexed element to higher indexed one generates a weird blank white space on the right side of the viewport
• when the page reloads sometimes the height of the List element is not properly inferred from the currently-active child component (see the implementation for clarification)
• the buttons on ProductCard often are not active (cannot be clicked)

The logic of how the component works might be worth reconsidering.

Moreover, support for many products per Pagination page should be implemented.

[admkopec]

The missing pagination as well as inactive buttons on ProductCard have been addressed in PR #109