GUI: Version info should be right-aligned in list view

[Kurufinwe21]

Currently, in list view, the version info seems to be centred respective to the white space between the search boxes and the right of the window. This looks really inelegant, especially since it's right under the ScummVM logo which is centred with respect to the window. (see screenshot)

It should be probably be moved to the right of the window, as is the case in icons view.