Display cover for first volume in list, not first volume in series

Description of your request or bug report:

On the library page, when you have more than one book in a series, it shows the cover of the first volume in the series. It would be better if it showed the first volume in that list. For example, in my Owned section I have volumes 5 and 6 of 魔法少女育成計画, so the series cover should be for volume 5, not volume 1.


Trello link:

I agree with this. Approved.