allow to use Vlabs (and refactor opacity usage)

Author: Leny BERNARD

Resources/views/show.html.twig

@@ -3,10 +3,14 @@
 {% trans_default_domain "victoire" %}
 
 {% block content %}
-    {% if image.url is defined and opacity is not null %}
-        {% set background = "background-image: " ~ opacity ~ ", url(" ~ image.url ~ ");" %}
-    {% elseif image.url is defined %}
-        {% set background = "background-image: url(" ~ image.url ~ ");" %}
+
+    {% if opacity is not null %}
+        {% set opacity = opacity ~ "," %}
+    {% endif %}
+    {% if image.url is defined %}
+        {% set background = "background-image: " ~ opacity ~ " url(" ~ image.url ~ ");" %}
+    {% elseif image.path is defined %}
+        {% set background = "background-image: " ~ opacity ~ " url(" ~ asset(image.path) ~ ");" %}
     {% else %}
         {% set background = "background-color: #cccccc;" %}
     {% endif %}