Dropdowns in resonsive mode still have up arrows

[atamur]

Hi,

code at the line 111 in less/responsive-navbar.less:

  .nav-collapse .dropdown-menu:before,
  .nav-collapse .dropdown-menu:after {
    display: none;
  }

doesn't work as intended as the actual class for the arrows is much more specific now:
.navbar .nav > li > .dropdown-menu:before

I worked around that with the following patch on top of 2.1.0

@media (max-width: 767px) {

    .navbar .nav-collapse .nav > li > .dropdown-menu:before,
    .navbar .nav-collapse .nav > li > .dropdown-menu:after {
        display: none;
    }

}

[mdo]

Already fixed in 2.1.1-wip.