Ok, let me try to clear this to you. As you can see in the pic above that a question has been asked there. Now there are just icons to answer that question, comment, hide, close or edit. Well there is probability that new users may get confuse with the icons as there is no text, so this icons bar is placed in footer to let them know, that what the icon do. This bar is for both mobile and desktop users, but as we hover the mouse over icons in the forum then we easily gets to know that what the icon do (in desktop mode), but this is not possible in mobile view, so mostly this bar will be a great help to mobile users.
There is nothing in this icons bar to be functional becuase its just like a normal notice borad. Just read that icons and go on working. Nothing to waist time here. It will only help new users but as they will get used to icons, this bar will be of no use to them.