[frontend] map controls are selectable #1582
Description
When dragging around a map, it's possible to start the drag in the wrong place and end up selecting the text of buttons.
Interestingly, the sibling element of these controls is the text "Showing 4 of 4", top-centre of the map. And this element does have user-select: none set:
Ideally all these controls would have user-select: none.