Bug 1112324 - updates to privacy day home promo

* Add tracking params to URLs
* Font size adjustment (smaller for non-English)

bedrock/mozorg/templates/mozorg/home/home-new.html

@@ -148,7 +148,7 @@ <h2 class="go">{{ _('Download Firefox') }}</h2>
      {% if LANG.startswith('en') and waffle.switch('mozorg-home-privacy-promo-jan28') %}
        <li id="promo-6" class="item promo-large-landscape privacy-day" tabindex="0" data-name="January 28 is Data Privacy Day">
          <h2 class="primary go">January 28 is Data Privacy Day</h2>
          <a class="panel-link" rel="external" href="{{ url('privacy.privacy-day') }}">
          <a class="panel-link" rel="external" href="{{ url('privacy.privacy-day') }}?utm_source=mozorg&amp;utm_medium=tile&amp;utm_campaign=DPD15">
            <div class="secondary">
              <h3>Get smart on privacy<br> in four easy steps.</h3>
              <p class="more">Learn how</p>
@@ -158,7 +158,7 @@ <h3>Get smart on privacy<br> in four easy steps.</h3>
      {% else %}
        <li id="promo-6" class="item promo-large-landscape privacy-day" tabindex="0" data-name="Get smart on privacy">
          <h2 class="primary go">{{ _('Get Smart on Privacy') }}</h2>
          <a class="panel-link" rel="external" href="{{ url('privacy.privacy-day') }}">
          <a class="panel-link" rel="external" href="{{ url('privacy.privacy-day') }}?utm_source=mozorg&amp;utm_medium=tile&amp;utm_campaign=DPD15">
            <div class="secondary">
              <h3>{{ _('Learn how to give yourself more control online in four easy steps.') }}</h3>
              <p class="more">{{ _('Get smart on privacy') }}</p>

media/css/mozorg/home/home-promo.less

@@ -778,7 +778,14 @@ html[lang|="en"] {
    .background-size(100px, 100px);

    h2 {
        padding: 20px 10px 10px 130px;
        padding: 20px 10px 10px 125px;
        .font-size(16px);
    }
}

[lang|='en'] {
    .promo-small-landscape.advocacy h2 {
        .font-size(22px);
    }
}