Update the background color of "No exploits known" to grey #215

The previous green color was misleading as the vulnerability still exist and may still be exploitable.

Signed-off-by: tdruez <[email protected]>

Author: tdruez

vulnerabilities/templates/vulnerabilities/includes/exploitability.html

@@ -1,6 +1,6 @@
 {% if instance.exploitability %}
   <span class="badge
-    {% if instance.exploitability == 0.5 %}bg-success
+    {% if instance.exploitability == 0.5 %}bg-secondary
     {% elif instance.exploitability == 1.0 %}bg-warning
     {% elif instance.exploitability == 2.0 %}bg-danger
     {% else %}bg-secondary