Add privacy policy

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

registration/templates/registration/signup.html

@@ -15,6 +15,13 @@
         {% csrf_token %}
         {{ form|crispy }}
         <div id="registration_form"></div>
+
+        <div class="py-2 text-muted">
+            <i class="fas fa-info-circle"></i>
+            {% trans "By registering, you certify that you have read and accepted our" %}
+            <a href="{% url 'about' %}#politique-confidentialite">{% trans "privacy policy" %}</a>.
+        </div>
+
         <button class="btn btn-success" type="submit">
             {% trans "Sign up" %}
         </button>