Fix calculation of budget balance

src/Bundle/ChillBudgetBundle/Resources/views/Budget/_macros.html.twig

@@ -72,14 +72,20 @@
 
 {% macro table_results(actualCharges, actualResources, results) %}
 
+{% set now = date() %}
+
 {% set totalCharges = 0 %}
 {% for c in actualCharges %}
-    {% set totalCharges = totalCharges + c.amount %}
+    {% if c.startDate <= now and (c.endDate is null or c.endDate >= now) %}
+        {% set totalCharges = totalCharges + c.amount %}
+    {% endif %}
 {% endfor %}
 
 {% set totalResources = 0 %}
 {% for r in actualResources %}
-    {% set totalResources = totalResources + r.amount %}
+    {% if r.startDate <= now and (r.endDate is null or r.endDate >= now) %}
+        {% set totalResources = totalResources + r.amount %}
+    {% endif %}
 {% endfor %}
 
 {% set result = (totalResources - totalCharges) %}