Merge "fix z-order of hangouts to avoid clobbering the search suggest" into lmp-dev

  <?cs elif:training || guide || reference || tools || develop || google || samples ?>

    <!-- Secondary x-nav -->

    <div id="nav-x">

        <div class="wrap" style="position:relative">

        <div class="wrap" style="position:relative;z-index:1">

        <?cs if:reference ?>

            <a id="helpoutsLink" class="resource resource-card resource-card-6x2x3 resource-card-6x2 helpouts-card"