fixed sig-select deck styling, room.html aperture styling

src/apps/epic/views.py

@@ -219,6 +219,7 @@ def gatekeeper(request, room_id):
     else:
         ctx = _gate_context(room, request.user)
     ctx["room"] = room
+    ctx["page_class"] = "page-gameboard"
     return render(request, "apps/gameboard/room.html", ctx)