{% load humanize %}

<a href="{% url 'run_task' task_obj.name %}"
   class="btn btn-block btn-outline-secondary p-1">{{ task_obj.label }}</a>
<a href="{% url 'run_task' task_obj.name %}"
   class="btn btn-block btn-secondary p-1 px-2">{{ task_obj.t_end | naturaltime }}</a>