Unit test analysis

* adds unit test for creating report
* fixes bug where new (>2018) eco accounts have not been fetched correctly from the  db
* adds enhancements in the frontend
* improves test data setup

analysis/templates/analysis/reports/includes/intervention/card_intervention.html

@@ -9,6 +9,7 @@
                                 {% fa5_icon 'pencil-ruler' %}
                                 {% trans 'Interventions' %}
                             </h5>
+                            <span>{% trans 'Binding date after' %} 16.06.2018</span>
                         </div>
                     </div>
                 </div>