Fixed an issue in which all admin menu items take 3 lines.

It seems whenever the length of the items is too long, the items span into 3 lines. This is due to a `clear: left` taking place for the last three elements. So, if all the elements before them happen to span 2 lines then the `clear: left` adds an additional one.

I think the intention is to somehow make those 3 elements stand out. So I added a box around them but made sure the `clear: left` is gone so that the elements take the space they need and no more than that.

Just mentioning @q2amarket to take a look at it too and evaluate a different approach if needed.