{# You should extend it from site_base.html or some other template using {% extends 'site_base.html' %} by instance #}
{% load i18n %}
<h2>{% trans "Add link to "%} <strong>{{ object }}</strong></h2>
<form action="{% url generic_links.views.add_link app_model,object.id %}" method="POST">
    {{ form }}{% csrf_token %}
    <button type="submit">{% trans "Save" %}</button>
</form>