{% load wagtailimages_tags wagtailsettings_tags nurseconnect_tags %}
{% get_settings %}
{% if settings.core.SiteSettings.facebook_sharing or settings.core.SiteSettings.twitter_sharing %}
<section class="ContentList">
  <div class="ContentList-body">
    <header class="ContentList-header">
        <h1 class="ContentList-categoryLabel">share</h1>
    </header>
    <div class="SocialShare">
      {% if settings.core.SiteSettings.facebook_sharing %}
          <a href="http://www.facebook.com/sharer.php?u=http{% if request.is_secure %}s{%endif %}://{{ request.get_host }}{{ request.path }}" target="_blank" class="SocialShare-icon SocialShare-facebook">Facebook</a>
      {% endif %}
      {% if settings.core.SiteSettings.twitter_sharing %}
          <a href="https://twitter.com/share?url=http{% if request.is_secure %}s{%endif %}://{{ request.get_host }}{{ request.path }}" target="_blank" class="SocialShare-icon SocialShare-twitter">Twitter</a>
      {% endif %}
    </div>
  </div>
</section>
{% endif %}
{% load wagtailimages_tags wagtailsettings_tags nurseconnect_tags %}
{% get_settings %}
{% if settings.core.SiteSettings.facebook_sharing or settings.core.SiteSettings.twitter_sharing %}
<section class="ContentList">
  <div class="ContentList-body">
    <header class="ContentList-header">
        <h1 class="ContentList-categoryLabel">share</h1>
    </header>
    <div class="SocialShare">
      {% if settings.core.SiteSettings.facebook_sharing %}
          <a href="http://www.facebook.com/sharer.php?u={{ request.build_absolute_uri }}" target="_blank" class="SocialShare-icon SocialShare-facebook">Facebook</a>
      {% endif %}
      {% if settings.core.SiteSettings.twitter_sharing %}
          <a href="https://twitter.com/share?url={{ request.build_absolute_uri }}" target="_blank" class="SocialShare-icon SocialShare-twitter">Twitter</a>
      {% endif %}
    </div>
  </div>
</section>
{% endif %}

Use built in django function
Use built in django function

See: https://docs.djangoproject.com/en/1.11/ref/request-response/#django.http.HttpRequest.build_absolute_uri