Check search fields for platforms and devices scroll behaviour (new confiugration page)

With !38 (merged), we made a lot of changes on the frontend.

I realized that the behaviour regarding scrolling is different for platforms and devices.

For platforms is has a separate box that is used for scrolling between the platforms:

While for devices it hasn't this box and expands the overall page:

And I also realized that there is some difference in the space between the search fields and the first found element (the platforms are higher then the devices).