Fix cache validation

GuLinux · GuLinux · commit 6c30d9694174 · 2016-06-28T09:21:02.000+02:00
diff --git a/blueprints.yaml b/blueprints.yaml
@@ -52,6 +52,5 @@ form:
       size: small
       label: Flickr requests cache duration (seconds, 0 to disable caching)
       validate:
-        required: true
         type: number
         min: 0
