hard-coded border-radius for nav-pills

Created by: JamesMessinger

In navs.less, the border-radius for the nav-pills class is hard-coded to 5px. Shouldn't it use @border-radius-base instead?

// Pills
// -------------------------
.nav-pills {
  > li {
    float: left;

    // Links rendered as pills
    > a {
      border-radius: 5px;
    }