Consider preventing word wrap in header nav

[kp77]

The UCPKN project has a relatively long main navigation and on smaller screen sizes a multi-word nav item breaks into 2 lines.

We are fixing it with the following override:

.bcl-header__navbar {
  .navbar-nav {
    .nav-link {
      white-space: nowrap;
    }
  }
}

Note: some of the menu items are dropdown toggles, that receive the nowrap rule from bootstrap, this makes the wrapping behavior in the menu inconsistent.

Please consider adding the above rule either to the default header style, or if it's not possible to the UCPKN header overrides.