Small Player / Queue Improvements

While technically these are two unrelated changes I felt like they were small enough to group them together in one merge request:

1. There currently is an underlined whitespace before the album name in the player and the queue which is removed by c2587e0a
2. I found it to be quite confusing at first to find out how to close the queue. The ESC button is meaningful enough to just try it out, but this commit adds an explicit button (which is already present and now duplicated on mobile). A close button at this position is a common UI pattern, so I didn't open an issue at first. I also emphasized that the Clear button triggers a destructive action.

This is what the updated queue looks like:

Desktop:

Mobile: :